# O with diaeresis (Cyrillic)

The Cyrillic script :
Slavic letters :
| А | А̂ | А̄ | Ӑ | Ӓ | Б | В | Г |
| Ґ | Д | Ђ | Ѓ | Е | Е̂ | Е̄ | Ё |
| Є | Є́ | Ж | З | З́ | Ѕ | И | І |
| І́ | Ї | Ꙇ | И̂ | Ӣ | Й | Ӥ | Ј |
| К | Л | Љ | М | Н | Њ | О | О̂ |
| О̄ | Ӧ | П | Р | С | С́ | Т | Ћ |
| Ќ | У | У̂ | Ӯ | Ў | Ӱ | Ф | Х |
| Ц | Ч | Џ | Ш | Щ | Ꙏ | Ъ | Ы |
| Ь | Э | Ю | Я | ʼ | ˮ | | |
Non-Slavic letters :
| А̊ | А̃ | Ӓ̄ | Ӕ | Ә | Ә̃ | Ӛ | В̌ |
| Ԝ | Г̑ | Г̇ | Г̣ | Г̌ | Г̂ | Г̆ | Г̈ |
| Г̊ | Ҕ | Ғ | | Ӻ | Ғ̌ | Ғ̊ | Ӷ |
| Г̡ | Д́ | Д̌ | Д̈ | Д̣ | Д̆ | Ӗ | Е̃ |
| Ё̄ | Є̈ | Ԑ | Ԑ̈ | Җ | Ӝ | Ӂ | Ж̣ |
| Ҙ | Ӟ | З̌ | З̣ | З̆ | Ӡ | И̃ | И̇ |
| Ҋ | Қ | Ӄ | Ҡ | Ҟ | Ҝ | К̣ | К̊ |
| Қ̊ | Ԛ | ᴫ | Л́ | Ӆ | Ԯ | Ԓ | Л̈ |
| Ӎ | ᵸ | Н́ | Ӊ | Ң | Ԩ | Ӈ | Ҥ |
| О̆ | О̃ | Ӧ̄ | Ө | Ө̄ | Ө́ | Ө̆ | Ӫ |
| Ԥ | П̈ | Р̌ | Ҏ | С̌ | Ҫ | С̣ | С̱ |
| Т́ | Т̈ | Т̌ | Т̇ | Т̣ | Ҭ | Ᲊ | У̃ |
| У̌ | Ӳ | У̊ | Ӱ̄ | Ұ | Ү | Ү́ | Х̣ |
| Х̱ | Х̮ | Х̑ | Х̌ | Ҳ | Ӽ | Х̊ | Ӿ |
| Ӿ̊ | Һ | Һ̈ | Ԧ | Ц̌ | Ц̈ | Ҵ | Ҷ |
| Ҷ̣ | Ӵ | Ӌ | | Ҹ | Ч̇ | Ч̣ | Ҽ |
| Ҿ | Ш̣ | ꚜ | Ы̆ | Ы̄ | Ӹ | ꚝ | Ҍ |
| Ҩ | Э̄ | Э̇ | Ӭ | Ӭ́ | Ӭ̄ | Ю̆ | Ю̈ |
| Ю̄ | Я̆ | Я̄ | Я̈ | Ӏ | | | |
Archaic or unused letters :
А̨Б̀Б̣Б̱В̀Г̀Г̧Г̄Г̓Г̆Ҕ̀Ҕ̆ԀД̓Д̀Д̨ԂꚀꙢЕ̇Е̨Ж̀Ж̑ꙂꙄЏ̆ꚄꚄ̆ꙀЗ̀З̑ԄԆꚈԪꚂꚔІ̂І̣І̨Ј̵Ј̃ꙈК̓К̀К̆Ӄ̆К̑К̇К̈К̄ԞК̂Л̀ԠꙤԈЛ̑Л̇ԔМ̀М̃ꙦН̀Н̄Н̧Н̃ԊԢН̡ѺꙨꙪꙬꙮꚘꚚП̓П̀П́ҦП̧П̑ҀԚ̆Р́Р̀Р̃ԖС̀С̈ԌҪ̓Т̓Т̀ԎТ̑ꚊТ̧ꚌꚌ̆ѸꙊУ̇У̨ꙋ́Ф̑Ф̓Х́Х̀Х̆Х̇Х̧Х̾Х̓һ̱ѠꙌѼѾꙠЦ̀Ц́Ц̓ꚎꚎ̆ꚐЧ́Ч̀Ч̆Ч̑Ч̓ԬꚒꚆꚆ̆Ҽ̆Ш̀Ш̆Ш̑Щ̆ꚖꚖ̆Ъ̄Ъ̈Ъ̈̄ꙐЫ̂Ы̃ѢѢ́Ѣ̈Ѣ̆ꙒЭ̨Э̂ꙔЮ̂ꙖЯ̈Я̂Я̨ԘѤѦꙘѪꙚѨꙜѬѮѰѲѴѶꙞ :
List of Cyrillic letters
List of Cyrillic multigraphs :
vte :
O with diaeresis (Ӧ ӧ; italics: Ӧ ӧ) is a letter of the Cyrillic script. In all its forms it looks exactly like the Latin letter Ö (Ö ö Ö ö).
O with diaeresis is used in the alphabets of the Altai, Khanty, Khakas, Komi, Kurdish, Mari, Shor and Udmurt languages.

## Usage

In Altai, Khakas, Khanty and Shor, it represents the close-mid front rounded vowel /ø/, like the pronunciation of the ⟨ir⟩ in "bird" in non-rhotic dialects of English.
In Komi, it represents the schwa /ə/, like the ⟨a⟩ in "allow".
In Kurdish, it represents the near-close near-back rounded vowel /ʊ/, like the ⟨oo⟩ in "book".
In Mari, it represents the open-mid front rounded vowel /œ/, similar to /ø/.
In Udmurt, it represents the open-mid back unrounded vowel /ʌ/, like the ⟨u⟩ in "up".
In Russian books until the beginning of the 20th century, the letter Ӧ has been sporadically used instead of Ё in foreign names and loanwords (for example, the city of Cologne, Germany, which is Köln in German, might have been rendered in Russian as "Кӧльн").
In Tatar, this letter appeared in the 1861 Cyrillic orthography by Nikolay Ilminsky. This letter was replaced by Ө in 1939.
O with diaeresis and macron (Ӧ̄ ӧ̄; italics: Ӧ̄ ӧ̄) is a letter from the Cyrillic script. It is used in the southern dialects of the Selkup language, to indicate a long Ӧ.

## Computing codes

Character information :
| Preview | Ӧ | Ӧ | ӧ | ӧ |
| Unicode name | CYRILLIC CAPITAL LETTER O WITH DIAERESIS | CYRILLIC CAPITAL LETTER O WITH DIAERESIS | CYRILLIC SMALL LETTER O WITH DIAERESIS | CYRILLIC SMALL LETTER O WITH DIAERESIS |
| Encodings | decimal | hex | dec | hex |
| Unicode | 1254 | U+04E6 | 1255 | U+04E7 |
| UTF-8 | 211 166 | D3 A6 | 211 167 | D3 A7 |
| Numeric character reference | &#1254; | &#x4E6; | &#1255; | &#x4E7; |