The characters in the range U+0400–U+045F are basically the characters from ISO 8859-5 moved upward by 864 positions. The next characters in the Cyrillic block, range U+0460–U+0489, are historical letters, some of which are still used for Church Slavonic. The characters in the range U+048A–U+04FF and the complete Cyrillic Supplement block (U+0500-U+052F) are additional letters for various languages that are written with Cyrillic script. Two characters are in the Phonetic Extensions block: U+1D2BᴫCYRILLIC LETTER SMALL CAPITAL EL from the Uralic Phonetic Alphabet and U+1D78ᵸMODIFIER LETTER CYRILLIC EN for transcribing nasal vowels.
Unicode includes few precomposed accented Cyrillic letters; the others can be combined by adding U+0301 ("combining acute accent") after the accented vowel (e.g., е́ у́ э́); see below.
Several diacritical marks not specific to Cyrillic can be used with Cyrillic text, including:
U+0301◌́COMBINING ACUTE ACCENT (as common Cyrillic stress mark).To input an accented letter with acute accent: for the letter R (for example), digit R0301 (without space between letter and number), then select 0301 only and press Alt + X = Ŕ.
U+0300◌̀COMBINING GRAVE ACCENT (as stress mark in Bulgarian).
U+0303◌̃COMBINING TILDE (in non Slavic languages)
U+0304◌̄COMBINING MACRON (in non Slavic languages)
U+0306◌̆COMBINING BREVE (with й but also other letters in non Slavic languages)
U+0307◌̇COMBINING DOT ABOVE (in transliterations of other writing systems)
U+0308◌̈COMBINING DIAERESIS (in non Slavic languages)
U+030A◌̊COMBINING RING ABOVE (in non Slavic languages)
U+030B◌̋COMBINING DOUBLE ACUTE ACCENT (in non Slavic languages)
U+030C◌̌COMBINING CARON (in non Slavic languages)
U+030F◌̏COMBINING DOUBLE GRAVE ACCENT (with ѷ in old spelling)
U+0311◌̑COMBINING INVERTED BREVE (in 19th century Aleut alphabet)
U+0323◌̣COMBINING DOT BELOW (in transliterations of other writing systems)
U+0328◌̨COMBINING OGONEK (in 19th century Lithuanian or Polish cyrillic alphabets)
U+0331◌̱COMBINING MACRON BELOW (in transliterations of other writing systems)
U+033E◌̾COMBINING VERTICAL TILDE (in 19th century Polish cyrillic alphabet)
U+20DD◌⃝COMBINING ENCLOSING CIRCLE (as Cyrillic ten thousands sign).
In the table below, small letters are ordered according to their Unicode numbers; capital letters are placed immediately before the corresponding small letters. Standard Unicode names and canonical decompositions are included.