What is DSTU 9112:2021?

DSTU 9112:2021 is the Ukrainian national standard for transliterating Cyrillic to Latin. System A is its scientific, one-to-one variant using diacritics, designed to be fully reversible so the original Cyrillic can be reconstructed exactly.

How does this differ from passport transliteration?

Ukrainian passports use the KMU 2010 system, which renders sounds with digraphs (zh, kh, ya) and is not reversible. DSTU 9112 System A instead uses single Latin letters with diacritics (ž, h, ja), keeping a strict one-to-one mapping.

How are І, Ї, Є and Г handled?

In System A і maps to i, ї maps to ji, є maps to je, and г maps to h while ґ maps to g with a grave accent. This distinguishes the two g-letters and the iotated vowels in a way that differs from Russian romanisation.

Is the transliteration reversible?

Yes. Because every Ukrainian letter maps to exactly one Latin grapheme, you can mechanically convert the Latin output back to the original Cyrillic without ambiguity, which is the main purpose of System A.

What happens to the apostrophe and soft sign?

The Ukrainian apostrophe and the soft sign ь are both rendered as a modifier apostrophe character in System A, preserving their position so the text remains reversible. Digits, spaces and Latin characters pass through unchanged.

Ukrainian Romanization

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DSTU 9112:2021 is Ukraine’s national transliteration standard. This tool applies its System A variant — a scientific, reversible romanisation that maps each Cyrillic letter to a single Latin grapheme, so you can convert Ukrainian text to Latin and back without ambiguity.

How it works

System A is a strict one-to-one table. Each Ukrainian letter has exactly one Latin equivalent, with diacritics used where Latin runs out of plain letters:

а a   б b   в v   г h   ґ g̀   д d   е e   є je
ж ž   з z   и y   і i   ї ji  й j   к k   л l
м m   н n   о o   п p   р r   с s   т t   у u
ф f   х h   ц c   ч č   ш š   щ ŝ   ю ju  я ja
ь ʼ   ' ʼ

Capital letters are title-cased on their first character. Digits, spaces, and Latin text pass through unchanged. Because the mapping is bijective, the Latin output can be mechanically reversed back to the exact Cyrillic original.

Example

Україна, Київ, Львів -> Ukrajina, Kyjiv, Lʼviv
Запоріжжя            -> Zaporižžja

Notes

System A is the reversible scientific standard — distinct from the KMU 2010 passport system, which uses digraphs (zh, kh, ya) and is not one-to-one. Note the two g-letters: ordinary г becomes h, while ґ becomes g with a grave accent (g̀), reflecting Ukrainian pronunciation. Use System A when faithful, reversible transliteration matters, such as in library cataloguing or linguistics, and the passport system when matching official Ukrainian ID documents.