Possible Writings
*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 inPeople
*, Japanese politician *, Japanese politician *, Japanese mathematician *, Japanese sport wrestler *, Japanese manga artist *, Japanese politician *, Japanese footballer *, Japanese golfer *, Japanese mixed martial artist *, Japanese volleyball player *, Japanese diplomat *, Japanese judoka *, Japanese racewalker *, Japanese violinist and violist *, Japanese footballer *, Japanese actor *, Japanese particle physicist *Fictional characters
*, a character in the tokusatsu series ''Megaranger'' *, a character in the manga series ''All Out!!'' *, a character in the anime series ''Aldnoah.Zero'' *, a character in the anime series ''Stratos 4'' *, a character in the manga series ''Ace of Diamond'' *, a character in the anime series ''Da-Garn'' *, a character in the anime series ''Slam Dunk'' *, a character in the manga series ''Initial D'' {{DEFAULTSORT:Koichiro Japanese masculine given names