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The Vietnamese alphabet (Vietnamese: Chữ Quốc ngữ, Chữ Nôm: 𡨸國語, lit. 'Script of the National Language', IPA: [t͡ɕɨ˦ˀ˥ kuək̚˧˦ ŋɨ˦ˀ˥]) is the modern writing script for the Vietnamese language. It uses the Latin script based on Romance languages originally developed by Francisco de Pina (1585–1625), a missionary from Portugal.

The Vietnamese alphabet contains 29 letters, including seven letters using four diacritics: ⟨ă⟩, ⟨â⟩, ⟨ê⟩, ⟨ô⟩, ⟨ơ⟩, ⟨ư⟩, and ⟨đ⟩. There are an additional five diacritics used to designate tone (as in ⟨à⟩, ⟨á⟩, ⟨ả⟩, ⟨ã⟩, and ⟨ạ⟩). The complex vowel system and the large number of letters with diacritics, which can stack twice on the same letter (e.g. nhất meaning 'first'), makes it easy to distinguish the Vietnamese orthography from other writing systems that use the Latin script.

The Vietnamese system's use of diacritics produces an accurate transcription for tones despite the limitations of the Roman alphabet. On the other hand, sound changes in the spoken language have led to different letters, digraphs and trigraphs now representing the same sounds.

Letter names and pronunciation

Vietnamese uses 22 letters of the ISO basic Latin alphabet. The four remaining letters are not considered part of the Vietnamese alphabet although they are used to write loanwords, languages of other ethnic groups in the country based on Vietnamese phonetics to differentiate the meanings or even Vietnamese dialects, for example: ⟨dz⟩ or ⟨z⟩ for southerner pronunciation of ⟨v⟩ in standard Vietnamese.

In total, there are 12 vowels (nguyên âm) and 17 consonants (phụ âm, literally 'extra sound').

Notes

• The vowels in the table are bolded and italicized.
• The use of the terms bê bò or bờ bò to refer to ⟨b⟩ and as pê phở or pờ phở to refer to ⟨p⟩ is to avoid confusion in some contexts, the same for ⟨s⟩ as sờ mạnh or sờ nặng. (literally, 'strong s' or 'heavy s') and ⟨x⟩ as xờ nhẹ (literally, 'light x'), ⟨i⟩ as i ngắn (literally, 'short i') and ⟨y⟩ as y dài (literally, 'long y').
• ⟨q⟩ is always followed by ⟨u⟩ in every word and phrase in Vietnamese, e.g. quần 'trousers', quyến rũ 'to attract', etc.
• The name i-cờ-rét for ⟨y⟩ is from the French name for the letter: i grec (literally, 'Greek i'), referring to the letter's origin from the Greek letter upsilon. The other obsolete French pronunciations include ⟨e⟩ (/əː˧/) and ⟨u⟩ (/wi˧/).
• The Vietnamese alphabet does not contain the 4 letters ⟨f⟩ (ép, ép-phờ), ⟨j⟩ (gi), ⟨w⟩ (đớp lưu 'double u', vê kép, vê đúp 'double v') and ⟨z⟩ (giét). However, these letters are often used for foreign loanwords (even partially adapted ones: flo 'fluorine', jun 'joule', bazơ 'base') or may be kept for foreign names.
• ⟨y⟩ is most commonly treated as a vowel along with ⟨i⟩. ⟨i⟩ represents 'short /i˧/' and ⟨y⟩ represents 'long /i˧/'. ⟨y⟩ can have tones as well as other vowels (⟨ý⟩, ⟨ỳ⟩, ⟨ỹ⟩, ⟨ỷ⟩, ⟨ỵ⟩) e.g. Mỹ 'America'. It may also act as a consonant (when used after ⟨â⟩ and ⟨a⟩). It can sometimes be used to replace ⟨i⟩, e.g. bánh mì 'bread' can sometimes be written bánh mỳ by some people, but it is not generally considered standard or accurate.
• ⟨s⟩ and ⟨x⟩ are similar to each other in sound in Northern Vietnamese dialects or with some Southern Vietnamese speakers (especially in the Mekong Delta region) and can sometimes be used interchangeably between these speakers, e.g. sương xáo or sương sáo 'grass jelly'.

Middle Vietnamese alphabet

The Vietnamese alphabet in the Dictionarium Annamiticum Lusitanum et Latinum of Alexandre de Rhodes has 23 letters:

In this dictionary, there are fewer letters than the modern alphabet. The letters ă, â, ê, ô, ơ, and ư are regarded as separate letters in the modern alphabet and are used in the dictionary, but the author does not regard them as separate letters. In the dictionary, a letter with diacritics, like à, ạ, ă, ằ, and ặ, are not separate from the letter a; à, ạ, ă, ằ, and ặ are just regarded as the letter a with diacritics.

In the alphabet, there is a letter, the letter b with flourish ꞗ, that has fallen out of use. It was used to represents the voiced bilabial fricative /β/.

Two letters, ꞗ and đ, are neither upper nor lower case. So according to that orthography, the names of the two provinces Đồng Nai and Lâm Đồng will be đồng Nai and Lâm đồng. In the modern alphabet, the lower case version of đ is đ, and upper case version of đ is Đ.

There are two variants of minuscule s: the long s, ſ, and the short s, s. In the modern alphabet, the long s, ſ, is no longer used, and the short s, s, is the only variant of s.

Normal v in the dictionary has two variants: the normal v, v, and the curving-bottom v, u. In the 17th century, v and u were not different letters, v being a variant of u.

Consonants

The alphabet is largely derived from Portuguese with some influence from French, although the usage of ⟨gh⟩ and ⟨gi⟩ was borrowed from Italian (compare ghetto, Giuseppe) and that for ⟨c, k, qu⟩ from (Latinised) Greek and Latin (compare canis, kinesis, quō vādis), mirroring the English usage of these letters (compare cat, kite, queen).

10 digraphs consist: ⟨ch⟩, ⟨gh⟩, ⟨gi⟩, ⟨kh⟩, ⟨ng⟩, ⟨nh⟩, ⟨ph⟩, ⟨qu⟩, ⟨th⟩, ⟨tr⟩, and only one trigraph ⟨ngh⟩.

• The consonants also called with its phoneme with ờ, except k. So b will be bờ, c will be cờ and so on.

1. This causes some ambiguity with the diphthong ⟨ia, iê⟩, for example gia could be either ⟨gi⟩+⟨a⟩ or ⟨gi⟩+⟨ia⟩ . If there is a tone mark the ambiguity is resolved: giá is ⟨gi⟩+⟨á⟩ and gía is ⟨gi⟩+⟨ía⟩.

Vowels

Pronunciation

The correspondence between the orthography and pronunciation is somewhat complicated. In some cases, the same letter may represent several different sounds, and different letters may represent the same sound. This is because the orthography was designed centuries ago and the spoken language has changed, as shown in the chart directly above that contrasts the difference between Middle and Modern Vietnamese.

⟨i⟩ and ⟨y⟩ are mostly equivalent, and there is no concrete rule that says when to use one or the other, except in sequences like ⟨ay⟩ and ⟨uy⟩ (i.e. tay 'arm, hand' is read as /tă̄j/ while tai 'ear' is read as /tāj/). There have been attempts since the late 20th century to standardize the orthography by replacing ⟨y⟩ with ⟨i⟩ when it represents a vowel, the latest being a decision from the Vietnamese Ministry of Education in 1984. These efforts seem to have had limited effect. In textbooks published by Nhà Xuất bản Giáo dục ('Publishing House of Education'), ⟨y⟩ is used to represent /i/ only in Sino-Vietnamese words that are written with one letter ⟨y⟩ alone (diacritics can still be added, as in ⟨ý⟩, ⟨ỷ⟩), at the beginning of a syllable when followed by ⟨ê⟩ (as in yếm, yết), after ⟨u⟩ and in the sequence ⟨ay⟩; therefore such forms as *lý and *kỹ are not "standard", though they are much preferred elsewhere. Most people and the popular media continue to use the spelling that they are most accustomed to.

1. qua is pronounced /kwa/ except in quay, where it is pronounced /kwă/. When not preceded by q, ua is pronounced /uə̯/.
2. However, oong and ooc are pronounced /ɔŋ/ and /ɔk/.
3. uông and uôc are pronounced /uə̯ŋ/ and /uə̯k/ when not preceded by a q.
4. quô is pronounced /kwo/ except in quông and quôc, where it is pronounced /kwə̆w/. When not preceded by q, uô is pronounced /uə̯/.

The uses of ⟨i⟩ and ⟨y⟩ to represent the phoneme /i/ can be categorized as "standard" (as used in textbooks published by Nhà Xuất bản Giáo dục) and "non-standard" as follows.

This "standard" set by Nhà Xuất bản Giáo dục is not definite. It is unknown why the literature books use Lí while the history books use Lý.

Spelling

Vowel nuclei

The table below matches the vowels of Hanoi Vietnamese (written in the IPA) and their respective orthographic symbols used in the writing system.

	Front		Central		Back
	Sound	Spelling	Sound	Spelling	Sound	Spelling
Centering	/iə̯/	iê/ia*	/ɨə̯/	ươ/ưa*	/uə̯/	uô/ua*
Close	/i/	i, y	/ɨ/	ư	/u/	u
Close-mid/ Mid	/e/	ê	/ə/	ơ	/o/	ô
			/ə̆/	â
Open-mid/ Open	/ɛ/	e	/a/	a	/ɔ/	o
			/ă/	ă

Notes:

• The vowel /i/ is:
  • usually written ⟨i⟩: /sǐˀ/ = sĩ (a suffix indicating profession, similar to the English suffix -er).
  • sometimes written ⟨y⟩ after ⟨h⟩, ⟨k⟩, ⟨l⟩, ⟨m⟩, ⟨n⟩, ⟨s⟩, ⟨t⟩, ⟨v⟩, ⟨x⟩: /mǐˀ/ = Mỹ 'America'
    • It is always written ⟨y⟩ when:

1. preceded by an orthographic vowel: /xwīə̯n/ = khuyên 'to advise';
2. at the beginning of a word derived from Chinese (written as ⟨i⟩ otherwise): /ʔīə̯w/ = yêu 'to love'.

• The vowel /ɔ/ is written ⟨oo⟩ before ⟨c⟩ or ⟨ng⟩ (since ⟨o⟩ in that position represents /ăw/): /ʔɔ̌k/ = oóc 'organ (musical)'; /kǐŋ kɔ̄ŋ/ = kính coong. This generally only occurs in recent loanwords or when representing dialectal pronunciation.
• Similarly, the vowel /o/ is written ⟨ôô⟩ before ⟨c⟩ or ⟨ng⟩: /ʔōŋ/ = ôông (Nghệ An/Hà Tĩnh variant of ông /ʔə̆̄wŋ/). But unlike ⟨oo⟩ being frequently used in onomatopoeia, transcriptions from other languages and words "borrowed" from Nghệ An/Hà Tĩnh dialects (such as voọc), ⟨ôô⟩ seems to be used solely to convey the feel of the Nghệ An/Hà Tĩnh accents. In transcriptions, ⟨ô⟩ is preferred (e.g. các-tông 'cardboard', ắc-coóc-đê-ông 'accordion').

Diphthongs and triphthongs

		Rising Vowels	Rising-Falling Vowels	Falling Vowels
	nucleus (V)	/w/ on-glides	/w/ + V + off-glide	/j/ off-glides	/w/ off-glides
front	e	/wɛ/ oe/(q)ue*	/wɛw/ oeo/(q)ueo*		/ɛw/ eo
	ê	/we/ uê			/ew/ êu
	i	/wi/ uy	/wiw/ uyu		/iw/ iu
	ia/iê/yê*	/wiə̯/ uyê/uya*			/iə̯w/ iêu/yêu*
central	a	/wa/ oa/(q)ua*	/waj/ oai/(q)uai, /waw/ oao/(q)uao*	/aj/ ai	/aw/ ao
	ă	/wă/ oă/(q)uă*	/wăj/ oay/(q)uay*	/ăj/ ay	/ăw/ au
	â	/wə̆/ uâ	/wə̆j/ uây	/ə̆j/ ây	/ə̆w/ âu
	ơ	/wə/ uơ		/əj/ ơi	/əw/ ơu
	ư			/ɨj/ ưi	/ɨw/ ưu
	ưa/ươ*			/ɨə̯j/ ươi	/ɨə̯w/ ươu
back	o			/ɔj/ oi
	ô			/oj/ ôi
	u			/uj/ ui
	ua/uô*			/uə̯j/ uôi

Notes:

The glide /w/ is written:

• ⟨u⟩ after /k/ (spelled ⟨q⟩ in this instance)
• ⟨o⟩ in front of ⟨a⟩, ⟨ă⟩, or ⟨e⟩ except after ⟨q⟩
• ⟨o⟩ following ⟨a⟩ and ⟨e⟩
• ⟨u⟩ in all other cases; /ăw/ is written as ⟨au⟩ instead of *⟨ăw⟩ (cf. ⟨ao⟩ /aw/), and that /i/ is written as ⟨y⟩ after ⟨y⟩

The off-glide /j/ is written as ⟨i⟩ except after ⟨â⟩ and ⟨ă⟩, where it is written as ⟨y⟩; /ăj/ is written as ⟨ay⟩ instead of *⟨ăy⟩ (cf. ai /aj/).

The diphthong /iə̯/ is written:

• ⟨ia⟩ at the end of a syllable: /mǐə̯/ = mía 'sugar cane'
• iê before a consonant or off-glide: /mǐə̯ŋ/ = miếng 'piece'; /sīə̯w/ = xiêu 'to slope, slant'

The ⟨i⟩ of the diphthong changes to ⟨y⟩ after ⟨u⟩:

• ⟨ya⟩: /xwīə̯/ = khuya 'late at night'
• ⟨yê⟩: /xwīə̯n/ = khuyên 'to advise'

⟨iê⟩ changes to ⟨yê⟩ at the beginning of a syllable (⟨ia⟩ does not change):

• /īə̯n/ = yên 'calm'; /ǐə̯w/ yếu 'weak, feeble'

The diphthong /uə̯/ is written:

• ⟨ua⟩ at the end of a syllable: /mūə̯/ = mua 'to buy'
• ⟨uô⟩ before a consonant or off-glide: /mūə̯n/ = muôn 'ten thousand'; /sūə̯j/ = xuôi 'down'

The diphthong /ɨə̯/ is written:

• ⟨ưa⟩ at the end of a syllable: /mɨ̄ə̯/ = mưa 'to rain'
• ⟨ươ⟩ before a consonant or off-glide: /mɨ̄ə̯ŋ/ = mương 'irrigation canal'; /tɨ̌ə̯j/ = tưới 'to water, irrigate, sprinkle'

Tone marks

Vietnamese is a tonal language, so the meaning of each word depends on the pitch in which it is pronounced. Tones are marked in the IPA as suprasegmentals following the phonemic value. Some tones are also associated with a glottalization pattern.

There are six distinct tones in the standard northern dialect. The first one ("level tone") is not marked and the other five are indicated by diacritics applied to the vowel part of the syllable. The tone names are chosen such that the name of each tone is spoken in the tone it identifies.

In the south, there is a merging of the hỏi and ngã tones, in effect leaving five tones.

• *: Z (in TELEX) and 0 (in VNI) keys are used to remove the mark. For example, in VNI, U2 → ⟨ù⟩, then press 0 → ⟨u⟩.
• Unmarked vowels are pronounced with a level voice, in the middle of the speaking range.
• The grave accent indicates that the speaker should start somewhat low and drop slightly in tone, with the voice becoming increasingly breathy.
• The hook indicates in Northern Vietnamese that the speaker should start in the middle range and fall, but in Southern Vietnamese that the speaker should start somewhat low and fall, then rise (as when asking a question in English).
• In the North, a perispomeni indicates that the speaker should start mid, break off (with a glottal stop), then start again and rise like a question in tone. In the South, it is realized identically to the Hỏi tone.
• The acute accent indicates that the speaker should start mid and rise sharply in tone.
• The dot or cross signifies in Northern Vietnamese that the speaker starts low and fall lower in tone, with the voice becoming increasingly creaky and ending in a glottal stop.

In syllables where the vowel part consists of more than one vowel (such as diphthongs and triphthongs), the placement of the tone is still a matter of debate. Generally, there are two methodologies, an "old style" and a "new style". While the "old style" emphasizes aesthetics by placing the tone mark as close as possible to the center of the word (by placing the tone mark on the last vowel if an ending consonant part exists and on the next-to-last vowel if the ending consonant does not exist, as in hóa, hủy), the "new style" emphasizes linguistic principles and tries to apply the tone mark on the main vowel (as in hoá, huỷ). In both styles, when one vowel already has a quality diacritic on it, the tone mark must be applied to it as well, regardless of where it appears in the syllable (thus thuế is acceptable while *thúê is not). In the case of the ⟨ươ⟩ diphthong, the mark is placed on the ⟨ơ⟩. The ⟨u⟩ in ⟨qu⟩ is considered part of the consonant. Currently, the new style is usually used in textbooks published by Nhà Xuất bản Giáo dục, while most people still prefer the old style in casual uses. Among Overseas Vietnamese communities, the old style is predominant for all purposes.

In lexical ordering, differences in letters are treated as primary, differences in tone markings as secondary and differences in case as tertiary differences. (Letters include for instance ⟨a⟩ and ⟨ă⟩ but not ⟨ẳ⟩. Older dictionaries also treated digraphs and trigraphs like ⟨ch⟩ and ⟨ngh⟩ as base letters.) Ordering according to primary and secondary differences proceeds syllable by syllable. According to this principle, a dictionary lists tuân thủ before tuần chay because the secondary difference in the first syllable takes precedence over the primary difference in the second syllable.

Structure

In the past, syllables in multisyllabic words were concatenated with hyphens, but this practice has died out and hyphenation is now reserved for word-borrowings from other languages. A written syllable consists of at most three parts, in the following order from left to right:

1. An optional beginning consonant part
2. A required vowel syllable nucleus and the tone mark, if needed, applied above or below it
3. An ending consonant part, can only be one of the following: ⟨c⟩, ⟨ch⟩, ⟨m⟩, ⟨n⟩, ⟨ng⟩, ⟨nh⟩, ⟨p⟩, ⟨t⟩, or nothing.

History

Since the beginning of the Chinese rule 111 BC, literature, government papers, scholarly works, and religious scripture were all written in classical Chinese (漢文 Hán văn) while indigenous writing with chữ Hán started around the ninth century. Since the 12th century, several Vietnamese words started to be written in chữ Nôm, using Chinese characters. The system was based on Chinese characters, but was also supplemented with Vietnamese-invented characters to represent native Vietnamese words. These characters adapted or created using methods such as creating phono-semantic compounds (形聲 hình thanh), double-phonetic compounds (會音 hội âm), and borrowing the character for its pronunciation (假借 giả tá).

Name

People have called the Latinized script of Vietnamese chữ Quốc ngữ at least since 1867. In 1867, scholar Trương Vĩnh Ký published two grammar books. The first book is Mẹo luật dạy học tiếng pha-lang-sa (Tips to teach and learn French), a Vietnamese book written in chữ Quốc ngữ about French grammar. In this book, the Latinized script of Vietnamese was called chữ quốc ngự (not ngữ). The second book is Abrégé de grammaire annamite (Simplification of Annamite grammar), a French book about Vietnamese grammar. In this book, the Latinized script of Vietnamese was called "l’alphabet européen" (European alphabet), les caractères latins (Latin characters). On Gia Dinh Bao April 15th issue of 1867, when mentioned the French book about Vietnamese grammar, the name chữ quốc ngữ was used to indicate the Latinized script of Vietnamese.

Creation of chữ Quốc ngữ

As early as 1620, with the work of Francisco de Pina, Portuguese and Italian Jesuit missionaries in Vietnam began using Latin script to transcribe the Vietnamese language as an assistance for learning the language. The work was continued by the Avignonese Alexandre de Rhodes. Building on previous dictionaries by Gaspar do Amaral and António Barbosa, Rhodes compiled the Dictionarium Annamiticum Lusitanum et Latinum, a Vietnamese–Portuguese–Latin dictionary, which was later printed in Rome in 1651, using their spelling system. These efforts led eventually to the development of the present Vietnamese alphabet. For 200 years, chữ Quốc ngữ was used within the Catholic community. However, works written in the Vietnamese alphabet was in the minority and Catholic works in chữ Nôm were significantly more widespread. Chữ Nôm was the primary writing system used by Vietnamese Catholics.

Colonial period

In 1910, the French colonial administration enforced chữ Quốc ngữ. The Latin alphabet then became a means to publish Vietnamese popular literature, which was disparaged as vulgar by the Chinese-educated imperial elites. Historian Pamela A. Pears asserted that by instituting the Latin alphabet in Vietnam, the French cut the Vietnamese from their traditional Hán Nôm literature. An important reason why Latin script became the standard writing system in Vietnam but not in Cambodia and Laos, which were both dominated by the French for a similar amount of time under the same colonial framework, had to do with the Nguyễn Emperors of Vietnam heavily promoting its usage. According to the historian Liam Kelley in his 2016 work "Emperor Thành Thái’s Educational Revolution" neither the French nor the revolutionaries had enough power to spread the usage of chữ Quốc ngữ down to the village level. It was by imperial decree in 1906 of Emperor Thành Thái, that parents could decide whether their children will follow a curriculum in Hán văn (漢文) or Nam âm (南音, 'Southern sound', the contemporary Vietnamese name for chữ Quốc ngữ). This decree was issued at the same time when other social changes, such as the cutting of long male hair, were occurring. The main reason for the popularisation of the Latin alphabet in Vietnam/Đại Nam during the Nguyễn dynasty (the French protectorates of Annam and Tonkin) was because of the pioneering efforts by intellectuals from French Cochinchina combined with the progressive and scientific policies of the French government in French Indochina, that created the momentum for the usage of chữ Quốc ngữ to spread.

From the first days it was recognized that the Chinese language was a barrier between us and the natives; the education provided by means of the hieroglyphic characters was completely beyond us; this writing makes possible only with difficulty transmitting to the population the diverse ideas which are necessary for them at the level of their new political and commercial situation. Consequently we are obliged to follow the traditions of our own system of education; it is the only one which can bring close to us the Annamites of the colony by inculcating in them the principles of European civilization and isolating them from the hostile influence of our neighbors.

— In a letter dated January 15, 1866, Paulin Vial, Directeur du Cabinet du Gouverneur de la Cochinchine

Since the 1920s, the Vietnamese mostly use chữ Quốc ngữ, and new Vietnamese terms for new items or words are often calqued from Hán Nôm. Some French had originally planned to replace Vietnamese with French, but this never was a serious project, given the small number of French settlers compared with the native population. The French had to reluctantly accept the use of chữ Quốc ngữ to write Vietnamese since this writing system, created by Portuguese missionaries, is based on Portuguese orthography, not French.

Mass education

Between 1907 and 1908, the short-lived Tonkin Free School promulgated chữ Quốc ngữ and taught French language to the general population.

In 1917, the French system suppressed Vietnam's Confucian examination system, viewed as an aristocratic system linked with the "ancient regime", thereby forcing Vietnamese elites to educate their offspring in the French language education system. Emperor Khải Định declared the traditional writing system abolished in 1918. While traditional nationalists favoured the Confucian examination system and the use of chữ Hán, Vietnamese revolutionaries, progressive nationalists, and pro-French elites viewed the French education system as a means to "liberate" the Vietnamese from old Chinese domination and the unsatisfactory "outdated" Confucian examination system, to democratize education and to help bridge Vietnamese to European philosophies.

The French colonial system then set up another educational system, teaching Vietnamese as a first language using chữ Quốc ngữ in primary school and then the French language (taught in chữ Quốc ngữ). Hundreds of thousands of textbooks for primary education began to be published in chữ Quốc ngữ, with the unintentional result of turning the script into the popular medium for the expression for Vietnamese culture.

Late 20th century to present

Typesetting and printing Vietnamese has been challenging due to its number of accents/diacritics. This had led to the use of accent and diacritic-less names in Overseas Vietnamese, such as Viet instead of the proper Việt. Contemporary Vietnamese texts sometimes include words which have not been adapted to modern Vietnamese orthography, especially for documents written in chữ Hán. The Vietnamese language itself has been likened to a system akin to ruby characters elsewhere in Asia. French, which left a mark on the Vietnamese language in the form of loanwords and other influences, is no longer as widespread in Vietnam, with English or International English the preferred European language for commerce.

Computing

The universal character set Unicode has full support for the Latin Vietnamese writing system, although it does not have a separate segment for it. The required characters that other languages use are scattered throughout the Basic Latin, Latin-1 Supplement, Latin Extended-A and Latin Extended-B blocks; those that remain (such as the letters with dau hoi) are placed in the Latin Extended Additional block. An ASCII-based writing convention, Vietnamese Quoted Readable and several byte-based encodings including VSCII (TCVN), VNI, VISCII and Windows-1258 were widely used before Unicode became popular. Most new documents now exclusively use the Unicode format UTF-8.

Unicode allows the user to choose between precomposed characters and combining characters in inputting Vietnamese. Because in the past some fonts implemented combining characters in a nonstandard way (see Verdana font), most people use precomposed characters when composing Vietnamese-language documents (except on Windows where Windows-1258 used combining characters).

Most keyboards on modern phone and computer operating systems, including iOS, Android and MacOS, have now supported the Vietnamese language and direct input of diacritics by default. Previously, Vietnamese users had to manually install free software such as Unikey on computers or Laban Key on phones to type Vietnamese diacritics. These keyboards support input methods such as Telex.

Unicode code points

The following table provides Unicode code points for all non-ASCII Vietnamese letters.

See also

• Portuguese orthography
• Special characters:
  • Ă, Â, Đ, Ê, Ô, Ơ, Ư
  • Dot (diacritic)
  • Hook above
  • Horn (diacritic)
• Historic Writing
  • "Chữ Hán", classical Chinese written in Vietnam (Han characters)
  • "Chữ Nôm", former script used to write Vietnamese using Han and Nom (invented characters) words
• Coding and Input Methods:
  • Telex, the oldest standard input method for the Vietnamese alphabet on electronic devices.
  • VNI, another input and encoding convention for Vietnamese alphabet.
  • VIQR, another standard 7-bit input method for Vietnamese alphabet.
  • VISCII, another standard 8-bit encoding for Vietnamese alphabet.
  • Unicode, character encoding standard for most of the world's writing systems
• Vietnamese Braille
• Vietnamese calligraphy
• Vietnamese phonology
• Francisco de Pina
• Alexandre de Rhodes

References

1. ^ Jacques, Roland (2002). Portuguese Pioneers of Vietnamese Linguistics Prior to 1650 – Pionniers Portugais de la Linguistique Vietnamienne Jusqu'en 1650 (in English and French). Bangkok, Thailand: Orchid Press. ISBN 974-8304-77-9.
2. Jacques, Roland (2004). "Bồ Đào Nha và công trình sáng chế chữ quốc ngữ: Phải chăng cần viết lại lịch sử?" Translated by Nguyễn Đăng Trúc. In Các nhà truyền giáo Bồ Đào Nha và thời kỳ đầu của Giáo hội Công giáo Việt Nam (Quyển 1) – Les missionnaires portugais et les débuts de l'Eglise catholique au Viêt-nam (Tome 1) (in Vietnamese & French). Reichstett, France: Định Hướng Tùng Thư. ISBN 2-912554-26-8.
3. ^ Trần, Quốc Anh; Phạm, Thị Kiều Ly (October 2019). Từ Nước Mặn đến Roma: Những đóng góp của các giáo sĩ Dòng Tên trong quá trình La tinh hoá tiếng Việt ở thế kỷ 17. Conference 400 năm hình thành và phát triển chữ Quốc ngữ trong lịch sử loan báo Tin Mừng tại Việt Nam. Ho Chi Minh City: Ủy ban Văn hóa, Catholic Bishops' Conference of Vietnam.
4. Tran (2022).
5. Sidwell, Paul; Jenny, Mathias, eds. (2021). The Languages and Linguistics of Mainland Southeast Asia (PDF). De Gruyter. pp. 898–899. doi:10.1515/9783110558142. ISBN 978-3-11-055814-2. S2CID 242359233.
6. Haudricourt, André-Georges. 2010. "The Origin of the Peculiarities of the Vietnamese Alphabet." Mon-Khmer Studies 39: 89–104. Translated from: Haudricourt, André-Georges. 1949. "L'origine Des Particularités de L'alphabet Vietnamien." Dân Viêt-Nam 3: 61–68.
7. Friederichsen, Jakob Rupert (2009). Opening Up Knowledge Production Through Participatory Research?: Agricultural Research for Vietnam's Northern Uplands. Peter Lang. p. 126. ISBN 978-3-631-58842-0. Retrieved 1 November 2024. : With the colonial era, deep changes took place in education, communication, and ... French colonizers installed a modern European system of education to replace the literary and Confucianism-based model, they promoted a romanized Vietnamese script (Quốc Ngữ) to replace the Sino-Vietnamese characters (Hán Nôm)
8. "Vietnam Alphabet". vietnamesetypography.
9. "Do you know How to pronounce Igrec?". HowToPronounce.com. Retrieved 2017-10-30.
10. André-Georges Haudricourt. "The two b's in the Vietnamese dictionary of Alexandre de Rhodes". HAL, Alexis Michaud dịch, trang 1.
11. Alexandre de Rhodes. Dictionarium Anamiticum Lusitanum et Latinum. Romae, Sacra Congregationis de propaganda fide, năm 1651, trang chứa cột 65, cột 191 trong phần chính văn của sách (sách không được đánh số trang).
12. Kenneth J. Gregerson. "A study of Middle Vietnamese phonology". Bulletin de la Société des Études Indochinoises, Nouvelle Série – Tome XLIV, Nº 2, 1969, page 151, 173.
13. André-Georges Haudricourt. “The origin of the peculiarities of the Vietnamese alphabet”. HAL, Alexis Michaud dịch, trang 12.
14. Thompson, Laurence C. (July 1959). "Saigon Phonemics". Language. 35 (3): 454–476. doi:10.2307/411232. JSTOR 411232.
15. Mistakenly encoded in Unicode as the tilde. However, the tilde was used for something different in Middle Vietnamese, the so-called Vietnamese apex.
16. See for example Lê Bá Khanh; Lê Bá Kông (1998) . Vietnamese–English / English–Vietnamese Dictionary (7th ed.). New York City: Hippocrene Books. ISBN 0-87052-924-2.
17. "vietnamese Alphabet". Omniglot.com. 2014.
18. Kornicki 2017, p. 568.
19. John DeFrancis. Colonialism and Language Policy in Viet Nam. The Hague, Mouton Publishers, 1977, page 82–84.
20. John DeFrancis. Colonialism and Language Policy in Viet Nam. The Hague, Mouton Publishers, 1977, page 82.
21. Tran, Anh Q. (October 2018). "The Historiography of the Jesuits in Vietnam: 1615–1773 and 1957–2007". Jesuit Historiography Online. Brill.
22. Li 2020, p. 106.
23. ^ Ostrowski, Brian Eugene (2010). "The Rise of Christian Nôm Literature in Seventeenth-Century Vietnam: Fusing European Content and Local Expression". In Wilcox, Wynn (ed.). Vietnam and the West: New Approaches. Ithaca, New York: SEAP Publications, Cornell university Press. pp. 23, 38. ISBN 9780877277828.
24. "Quoc-ngu | Vietnamese writing system". Encyclopedia Britannica. Retrieved 2019-04-13.
25. ^ Nguyên Tùng, "Langues, écritures et littératures au Viêt-nam", Aséanie, Sciences humaines en Asie du Sud-Est, Vol. 2000/5, pp. 135-149.
26. Pamela A. Pears (2006). Remnants of Empire in Algeria and Vietnam: Women, Words and War. Lexington Books. p. 18. ISBN 0-7391-2022-0. Retrieved 2010-11-28.
27. ^ Nguyễn Quang Duy (12 September 2018). "Quốc ngữ và nỗ lực 'thoát Hán' của các vua nhà Nguyễn" (in Vietnamese). Người Việt Daily News. Retrieved 15 September 2021.
28. Li 2020, p. 107.
29. Trần Bích San. "Thi cử và giáo dục Việt Nam dưới thời thuộc Pháp" (in Vietnamese). Archived from the original on 2020-09-24. Retrieved 2020-09-24. Note 3. "The French had to accept reluctantly the existence of chữ quốc ngữ. The propagation of chữ quốc ngữ in Cochinchina was, in fact, not without resistance Chữ quốc ngữ was created by Portuguese missionaries according to the phonemic orthography of Portuguese language. The Vietnamese could not use chữ quốc ngữ to learn French script. The French would mispronounce chữ quốc ngữ in French orthography, particularly people's names and place names. Thus, the French constantly disparaged chữ quốc ngữ because of its uselessness in helping with the propagation of French script."
30. Anderson, Benedict. 1991. Imagined Communities: Reflections on the Origin and Spread of Nationalism. London: Verso. pp. 127-128.
31. Wellisch, Hans H. (1978). The Conversion of Scripts, Its Nature, History, and Utilization. Wiley. ISBN 978-0-471-01620-5.
32. Language Monthly. Praetorius. 1987.
33. Sassoon, Rosemary (1995). The acquisition of a second writing system. Internet Archive. Oxford  : Intellect. ISBN 978-1-871516-43-2.
34. Anh, Hao (2021-09-21). "Hướng dẫn gõ tiếng Việt trên iOS 15 bằng tính năng lướt phím QuickPath". VietNamNet (in Vietnamese). Retrieved 2022-03-20.
35. "Set up Gboard on Android". Google Support. Retrieved 2022-03-20.
36. Phan, Kim Long. "UniKey in macOS and iOS". UniKey. Retrieved 2022-03-20.

Bibliography

• Gregerson, Kenneth J. (1969). A study of Middle Vietnamese phonology. Bulletin de la Société des Etudes Indochinoises, 44, 135–193. (Published version of the author's MA thesis, University of Washington). (Reprinted 1981, Dallas: Summer Institute of Linguistics).
• Haudricourt, André-Georges (1949). "Origine des particularités de l'alphabet vietnamien (English translation as: The origin of the peculiarities of the Vietnamese alphabet)" (PDF). Dân Việt-Nam. 3: 61–68.
• Healy, Dana.(2003). Teach Yourself Vietnamese, Hodder Education, London.
• Kornicki, Peter (2017), "Sino-Vietnamese literature", in Li, Wai-yee; Denecke, Wiebke; Tian, Xiaofen (eds.), The Oxford Handbook of Classical Chinese Literature (1000 BCE-900 CE), Oxford: Oxford University Press, pp. 568–578, ISBN 978-0-199-35659-1.
• Li, Yu (2020). The Chinese Writing System in Asia: An Interdisciplinary Perspective. Routledge. ISBN 978-1-00-069906-7.
• Nguyen, Đang Liêm. (1970). Vietnamese pronunciation. PALI language texts: Southeast Asia. Honolulu: University of Hawaii Press. ISBN 0-87022-462-X.
• Nguyễn, Đình-Hoà. (1955). Quốc-ngữ: The modern writing system in Vietnam. Washington, D. C.: Author.
• Nguyễn, Đình-Hoà (1992). "Vietnamese phonology and graphemic borrowings from Chinese: The Book of 3,000 Characters revisited". Mon-Khmer Studies. 20: 163–182.
• Nguyễn, Đình-Hoà. (1996). Vietnamese. In P. T. Daniels, & W. Bright (Eds.), The world's writing systems, (pp. 691–699). New York: Oxford University Press. ISBN 0-19-507993-0.
• Nguyễn, Đình-Hoà. (1997). Vietnamese: Tiếng Việt không son phấn. Amsterdam: John Benjamins Publishing Company. ISBN 1-55619-733-0.
• Pham, Andrea Hoa. (2003). Vietnamese tone: A new analysis. Outstanding dissertations in linguistics. New York: Routledge. (Published version of author's 2001 PhD dissertation, University of Florida: Hoa, Pham. Vietnamese tone: Tone is not pitch). ISBN 0-415-96762-7.
• Phạm, Thị Kiều Ly (2022). Histoire de l’écriture romanisée du vietnamien (1615−1919). Les Indes savantes. ISBN 9782846546164.
• Sassoon, Rosemary (1995). The Acquisition of a Second Writing System (illustrated, reprint ed.). Intellect Books. ISBN 1871516439. Retrieved 24 April 2014.
• Thompson, Laurence E. (1991). A Vietnamese reference grammar. Seattle: University of Washington Press. Honolulu: University of Hawaii Press. ISBN 0-8248-1117-8. (Original work published 1965).
• Tran, Anh Q. (2022). "Catholicism and the Development of the Vietnamese Alphabet, 1620–1898". Journal of Vietnamese Studies. 17 (2–3): 9–37. doi:10.1525/vs.2022.17.2-3.9.
• Wellisch, Hans H. (1978). The conversion of scripts, its nature, history and utilization. Information sciences series (illustrated ed.). Wiley. ISBN 0471016209. Retrieved 24 April 2014.

Further reading

• Nguyen, A. M. (2006). Let's learn the Vietnamese alphabet. Las Vegas: Viet Baby. ISBN 0-9776482-0-6
• Shih, Virginia Jing-yi. Quoc Ngu Revolution: A Weapon of Nationalism in Vietnam. 1991.

External links

• Media related to Vietnamese writing at Wikimedia Commons
• Vietnamese Unicode FAQs

• Vietnamese language
• Latin alphabets
• Vietnamese writing systems
• Latin-script orthographies
• Writing systems without word boundaries