Ko (kana)
Ko is one of the Japanese kana, each of which represents one mora. Both represent. The shape of these kana comes from the kanji 己.
This character may be supplemented by a dakuten; it becomes ご in hiragana, ゴ 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 does not occur with ko in normal Japanese text, but it may be used by linguists to indicate a nasal pronunciation.
| Form | Rōmaji | Hiragana | Katakana |
| Normal k- | ko | こ | コ |
| Normal k- | kou koo kō | こう, こぅ こお, こぉ こー | コウ, コゥ コオ, コォ コー |
| Addition dakuten g- | go | ご | ゴ |
| Addition dakuten g- | gou goo gō | ごう, ごぅ ごお, ごぉ ごー | ゴウ, ゴゥ ゴオ, ゴォ ゴー |