き, in hiragana, キ in katakana, ki in Romaji with Hepburn romanisation (IPA: ), is one of the Japanese kana, which each represent one mora.

Both hiragana き and katakana キ are derived from a simplification of the 幾 kanji. The hiragana character き, like さ, can be drawn with the lower line either separate (as in the picture to the right) or connected.

A dakuten may be added to the character; this transforms it into ぎ in hiragana, ギ in katakana, and gi in Romaji. The phonetic value also changes, to . A handakuten (゜) does not occur with ki in normal Japanese text, but it may be used by linguists to indicate a nasal pronunciation (IPA: ) that occurs in some dialects.

Kana | き | き | き | き | き