Kojirō, Kojiro, Koujirou or Kohjiroh is a masculine Japanese given name. Notable people with the name include:

• Kojiro Kaimoto (海本 幸治郎,) (born 1977), Japanese footballer
• Kōjirō Matsumoto (松本 孝次郎, 1870–1932), Japanese educationist
• Kojiro Nakamura (中村 廣治郎), Japanese scholar of Islam
• Sasaki Kojirō (Ganryu Kojiro, c. 1585–1612), Japanese swordsman famous for his rivalry with Miyamoto Musashi
• Kojiro Shimizu (清水 宏次朗, born 1964), Japanese actor
• Kojiro Tamba (丹波 幸次郎, 1912–?), Japanese sport wrestler

Fictional characters

• James (Pokémon) (Kojiro), a member of Team Rocket from the Pokémon anime
• Kojiro Hyuga, a character from Captain Tsubasa anime
• Kojiro Murdoch, a character in Gundam SEED and Gundam SEED Destiny anime
• Kojiro, a character in The Irresponsible Captain Tylor anime
• Kojiro, a character in Brave Fencer Musashi video game, a fictional personification of Sasaki Kojiro
• Kojiro Vance, identified as the master of the spaceship Kobayashi Maru in the movie Star Trek II: The Wrath of Khan
• Kojiro Kanemaki, a main character from the manga/anime, Orient, by Shinobu Ohtaka.

See also

• Sasaki Kojiro a 1967 Japanese drama film directed by Hiroshi Inagaki
• Fūma no Kojirō, a Japanese manga and anime series and its title character
• Kōjiro Station (Nagasaki), a train station in Unzen, Nagasaki Prefecture, Japan
• Kōjiro Station (Yamaguchi), a train station in Iwakuni, Yamaguchi Prefecture, Japan