The Ukrainian alphabet (abetka, azbuka alfavit) is the set of letters used to write Ukrainian, which is the official language of Ukraine. It is one of several national variations of the Cyrillic script. It comes from the Cyrillic script, which was devised in the 9th century for the first Slavic literary language, called Old Slavonic. In the 10th century, it became used in Kievan Rus' to write Old East Slavic, from which the Belarusian, Russian, Rusyn, and Ukrainian alphabets later evolved. The modern Ukrainian alphabet has 33 letters in total: 20 consonants, 2 semivowels, 10 vowels and 1 palatalization sign. Sometimes the apostrophe (') is also included, which has a phonetic meaning and is a mandatory sign in writing, but is not considered as a letter and is not included in the alphabet.
In Ukrainian, it is called українська абетка (ʊkrɐˈjinjsjkɐ ɐˈbɛtkɐ; tr. ukrayins'ka abetka), from the initial letters а (tr. a) and б (tr. b); алфавіт (tr. alfavit); or, archaically, азбука (tr. azbuka), from the acrophonic early Cyrillic letter names азъ (tr. az) and буки (tr. buki).
Ukrainian text is sometimes romanised (written in the Latin alphabet) for non-Cyrillic readers or transcription systems. There are several common methods for romanizing Ukrainian including the international Cyrillic-to-Latin transcription standard ISO 9. There have also been several historical proposals for a native Ukrainian Latin alphabet, but none have caught on.
The alphabet comprises 34 letters, representing 40 phonemes including the apostrophe. Ukrainian orthography is based on the phonemic principle, with one letter generally corresponding to one phoneme. The orthography also has cases in which semantic, historical, and morphological principles are applied. In the Ukrainian alphabet the “Ь” could also be the last letter in the alphabet (this was its official position from 1932 to 1991).
Twenty letters represent consonants (б, в, г, ґ, д, ж, з, к, л, м, н, п, р, с, т, ф, х, ц, ч, ш, щ), ten vowels (а, е, є, и, і, ї, о, у, ю, я), and one semivowel (й/yot).