Kotaro, Kōtarō or Koutarou (written: 耕太郎, 孝太郎, 康太郎, 光太郎, 功太郎, 浩太朗, 浩太郎, 幸太郎, 晃太郎, 興太郎, 洸太郎 or コータロー in katakana) is a masculine Japanese given name. Notable people with the name include: Kotaro Azuse (東瀬 耕太郎; born 1967), Japanese baseball player Kotaro Honda (本多 光太郎; 1870–1954), Japanese scientist and inventor Kōtarō Iizawa (飯沢 耕太郎; born 1954), Japanese photography critic and writer Kotaro Ikeda (池田 幸太郎; 1895–1976), Japanese painter Kōtarō Isaka (伊坂 幸太郎; born 1971), Japanese writer Kōtarō Kodam