Koike is a Japanese surname. Notable people with the surname include:Akihiko Koike, a retired Japanese male race walker Akiko Koike, a Japanese voice actress Akira Koike, a Japanese politician Asao Koike , Japanese actor Ayame Koike, a Japanese actress Eiko Koike, a Japanese idol and actress Junki Koike, a Japanese football player Kazuko Koike, a Japanese creative director Kazumori Koike, a Japanese sprint canoer Kazuo Koike, a Japanese manga writer, novelist, and entrepreneur Kensuke Koike, a Japanese contemporary visual artist Mariko Koike , Japanese writer Masaaki Koike, a Japanese baseball player Masakatsu Koike, a Japanese politician Reizo Koike, a Japanese breaststroke swimmer Rina Koike, a Japanese idol and actress Ryohei Koike, a Japanese football player Satomi Koike , Japanese speed skater Shiori Koike , Japanese ice hockey player Shota Koike, a Japanese baseball catcher Takeshi Koike, a Japanese studio animator, illustrator, and film director Teppei Koike, a Japanese actor and singer Toshiki Koike, a Japanese football player Yui Koike, a Japanese gravure idol and actress Yuki Koike (footballer), a Japanese football player Yuki Koike (athlete), a Japanese sprinter Yuriko Koike, a Japanese politician
