Cyrillic letter U
Phonetic usage:	[u],[ʊ]
Numeric value:	400
Derived from:	Greek letter Upsilon (Υ υ)
The Cyrillic script
Slavic letters
А А́ А̀ А̄ Ӓ Б В Г Ґ Д Ђ Ѓ Е Е́ Ѐ Е̄ Ё Є Ж З З́ Ѕ И І Ї И́ Ѝ Ӣ Й Ј К Л Љ М Н Њ О О́ Ō П Р С С́ Т Ћ Ќ У У́ Ӯ Ў Ф Х Ц Ч Џ Ш Щ Ъ Ы Ь Э Ю Я
Non-Slavic letters
Ӑ А̊ А̃ Ӓ̄ Ӕ Ә Ә́ Ә̃ Ӛ В̌ Ғ Г̑ Г̣ Г̌ Ҕ Ӻ Ғ̌ Ӷ Д̣ Д̆ Ӗ Е̃ Ё̄ Є̈ Ӂ Җ Ӝ Ҙ Ӟ З̌ З̱ З̣ Ԑ Ԑ̈ Ӡ И̃ Ҋ Ӥ Қ Ӄ Ҡ Ҟ Ҝ К̣ Ԛ Ӆ Ԯ Ԓ Ӎ Ӊ Ң Ԩ Ӈ Ҥ О̀ О̆ О̂ О̃ Ӧ Ӧ̄ Ө Ө̄ Ө́ Ө̆ Ӫ Ҩ Ԥ Р̌ Ҏ Ҫ С̣ С̱ Т̌ Т̣ Ҭ У̃ Ӱ Ӱ́ Ӳ Ү Ү́ Ұ Х̣ Х̱ Х̮ Х̑ Ҳ Ӽ Ӿ Һ Һ̈ Ԧ Ҵ Ҷ Ӵ Ӌ Ҹ Ҽ Ҿ Ы̆ Ы̄ Ӹ Ҍ Э̆ Э̄ Э̇ Ӭ Ӭ́ Ӭ̄ Ю̆ Ю̈ Ю̈́ Ю̄ Я̆ Я̄ Я̈ Ԝ Ӏ
Archaic letters
Ꙁ Ꙃ Ꙅ Ꙇ Ꙉ Ҁ Ѻ ОУ Ꙋ Ѡ Ѽ Ꙍ Ѿ Ꙏ Ѣ Ꙑ Ꙓ Ꙕ Ꙗ Ѥ Ѧ Ꙙ Ѫ Ꙛ Ѩ Ꙝ Ѭ Ѯ Ѱ Ѳ Ѵ Ѷ Ԙ Ꙟ Ꙡ Ꙣ Ꙥ Ꙧ Ꙩ Ꙫ Ꙭ ꙮ Ꚙ Ꚛ Ԁ Ԕ Ԗ Ԡ Ԣ Ҧ Ꚋ Ꚁ Ꚅ Ꚍ Ꚕ Ꚏ Ꚗ Ꚃ Ԃ Ԅ Ԉ Ԋ Ԍ Ԏ Ԇ Ꚑ Ꚉ Ꚇ Ꚓ Ԟ Ԫ Ԭ Г̧ Г̄
List of Cyrillic letters Cyrillic digraphs
v t e

U (У у; italics: У у) is a letter of the Cyrillic script. It commonly represents the close back rounded vowel /u/, somewhat like the pronunciation of ⟨oo⟩ in "boot" or rule. The forms of the Cyrillic letter U are similar to the lowercase of the Latin letter Y (Y y; Y y), but like most other Cyrillic letters, the upper and lowercase forms are similar in shape and differ mainly in size and vertical placement.

History

Historically, Cyrillic U evolved as a specifically East Slavic short form of the digraph ⟨оу⟩ used in ancient Slavic texts to represent /u/. The digraph was itself a direct loan from the Greek alphabet, where the combination ⟨ου⟩ (omicron-upsilon) was also used to represent /u/. Later, the o was removed, leaving the modern upsilon-only form.

Consequently, the form of the letter is derived from Greek upsilon ⟨Υ υ⟩, which was parallelly also taken over into the Cyrillic alphabet in another form, as Izhitsa ⟨Ѵ⟩. (The letter Izhitsa was removed from the Russian alphabet in the orthography reform of 1917/19.)

It is normally romanised as "u", but in Kazakh, it is romanised as "w".

In the Cyrillic numeral system, the Cyrillic letter U had a value of 400.

In other languages

In Tuvan the Cyrillic letter can be written as a double vowel.^[1][2]

Related letters and other similar characters

Similarity with Y (uppercase): The grapheme on the left is clearly a Cyrillic U, the one in the middle may represent both letters, the one on the right is clearly a Greek or Latin Y.

• Υ υ : Greek letter Upsilon
• U u : Latin letter U
• Y y : Latin letter Y
• Ў ў : Cyrillic letter Short U, used in Belarusian, Dungan, Siberian Eskimo (Yuit), Uzbek
• Ӯ ӯ : Cyrillic letter U with macron, used in Tajik and Carpatho-Rusyn
• Ӱ ӱ : Cyrillic letter U with diaeresis, used in Altai (Oyrot), Khakas, Gagauz, Khanty, Mari
• Ӳ ӳ : Cyrillic letter U with double acute, used in Chuvash
• Ү ү : Cyrillic letter straight U, used in Mongolian, Kazakh, Tatar, Bashkir, Dungan and other languages
• Ұ ұ : Cyrillic letter Straight U with stroke, used in Kazakh^[3]
• Ꭹ Ꮍ : The syllables gi and mu of the Cherokee syllabary; Ꭹ (gi) notably appearing in the Cherokee self-designation ᏣᎳᎩ (Tsalagi)
• ע: The silent Hebrew letter Ayin

Computing codes