Ko (hiragana: ãÂÂ, katakana: ã³) is one of the Japanese kana, each of which represents one mora. Both represent . The shape of these kana comes from the kanji å·±.
This character may be supplemented by a dakuten; it becomes ã in hiragana, ã´ in katakana and go in Hepburn romanization. Also, the pronunciation is affected, transforming into in initial positions and varying between and in the middle of words.
A handakuten (ãÂÂ) does not occur with ko in normal Japanese text, but it may be used by linguists to indicate a nasal pronunciation .