Koichiro
Kōichirō, Koichiro, Kouichirou or Kohichiroh is a masculine Japanese given name.
Written forms
- 晃一郎, "clear, one, son"
- 光一郎, "light, one, son"
- 弘一郎, "vast, one, son"
- 鴻一郎, "prosperous, one, son"
- 紘一郎, "large, one, son"
- 浩一郎, "vigorous, one, son"
- 耕一郎, "till, one, son"
- 航一郎, "navigate, one, son"
- 倖一郎, "happiness, one, son"
- 孝一郎, "filial piety, one, son"
- 興一朗, "entertain, one, serene"
- 紘一朗, "large, one, serene"
- こういちろう in hiragana
- コウイチロウ in katakana
People
- Kōichirō Asakai, Japanese politician
- Kōichirō Genba, Japanese politician
- Koichiro Harada, Japanese mathematician
- Koichiro Hirayama, Japanese sport wrestler
- Kōichirō Hoshino, Japanese manga artist
- Koichiro Ichimura, Japanese politician
- Koichiro Katafuchi, Japanese footballer
- Koichiro Kawano, Japanese golfer
- Koichiro Kimura, Japanese mixed martial artist
- Koichiro Koga, Japanese volleyball player
- Kōichirō Matsuura, Japanese diplomat
- Koichiro Mitani, Japanese judoka
- Kōichirō Morioka, Japanese racewalker
- Koichiro Nishi, Japanese actor
- Kōichirō Nishikawa, Japanese particle physicist
- Koichiro Shima, Japanese creative director
- Koichiro Shimizu, Japanese surgeon and politician
- Kōichirō Tomita, Japanese astronomer
- Kōichirō Uno, Japanese writer
- Kōichirō Yasunaga, Japanese manga artist
- Kawada Koichiro, Japanese businessman and banker
- Tachibana Koichirō, Japanese general
Fictional characters
- Denji_Sentai_Megaranger#Kouichirou Endo, a character in the tokusatsu series Megaranger
- All Out!!#Kanagawa Prefectural High School Rugby Club, a character in the manga series All Out!!
- Aldnoah.Zero#United Forces of Earth, a character in the anime series Aldnoah.Zero
- List of Stratos 4 characters#Main characters, a character in the anime series Stratos 4
- List of Ace of Diamond characters#Yūki's Generation, a character in the manga series ''Ace of Diamond''