| 释义 |
{{Infobox given name
| name = Koichiro
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| gender = Male
| meaning = Different meanings depending on the kanji used
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| origin = Japanese
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}}Koichiro, Kōichirō or Kouichirou (written: 晃一郎, 光一郎, 弘一郎, 鴻一郎, 紘一郎, 浩一郎, 耕一郎, 航一郎, 倖一郎 or 興一朗) is a masculine Japanese given name. Notable people with the name include: - {{Nihongo|Kōichirō Genba|玄葉 光一郎||born 1964}}, Japanese politician
- Koichiro Harada, Japanese mathematician
- {{Nihongo|Koichiro Hirayama|平山 紘一郎||born 1946}}, Japanese sport wrestler
- {{Nihongo|Kōichirō Hoshino|星野 倖一郎}}, Japanese manga artist
- {{Nihongo|Koichiro Ichimura|市村 浩一郎||born 1964}}, Japanese politician
- {{Nihongo|Koichiro Katafuchi|片渕 浩一郎||born 1975}}, Japanese footballer
- Koichiro Kawano (born 1981), Japanese golfer
- {{Nihongo|Koichiro Koga|古賀 幸一郎||born 1984}}, Japanese volleyball player
- {{Nihongo|Kōichirō Matsuura|松浦 晃一郎||born 1937}}, Japanese diplomat
- {{Nihongo|Koichiro Mitani|三谷 浩一郎||born 1968}}, Japanese judoka
- {{Nihongo|Kōichirō Morioka|森岡 紘一朗||born 1985}}, Japanese racewalker
- {{Nihongo|Koichiro Nagatomo|長友 耕一郎||born 1982}}, Japanese footballer
- {{Nihongo|Koichiro Nishi|西 興一朗||born 1979}}, Japanese actor
- {{Nihongo|Kōichirō Nishikawa|西川 公一郎||born 1949}}, Japanese particle physicist
- {{Nihongo|Koichiro Shima|嶋 浩一郎||born 1968}}, Japanese creative director
- {{Nihongo|Koichiro Shimizu|清水 鴻一郎||born 1946}}, Japanese surgeon and politician
- {{Nihongo|Kōichirō Tomita|冨田 弘一郎||1925–2006}}, Japanese astronomer
- {{Nihongo|Kōichirō Uno|宇能 鴻一郎||born 1934}}, Japanese writer
- {{Nihongo|Kōichirō Yasunaga|安永 航一郎,||born 1962}}, Japanese manga artist
Koichirō or Koichirou (written: 小一郎) is a separate given name, though it may be romanized the same way. Notable people with the name include: - {{Nihongo|Kawada Koichiro|川田 小一郎||1836–1896}}, Japanese businessman and banker
- {{Nihongo|Tachibana Koichirō|立花 小一郎||1861–1929}}, Japanese general
{{given name}}{{DEFAULTSORT:Koichiro}} 1 : Japanese masculine given names |