is a Japanese surname.
People Fuka Koshiba (born 1997), Japanese actress Hiroshi Koshiba (1884–1925), one of the founders of the Japanese Scouting movement Joshua Koshiba (born 1943), politician Kenji Koshiba, wrestler Masatoshi Koshiba (1926–2020), physicist Peoria Koshiba (born 1979), sprinter Shigeru Koshiba, manga artist Tetsuya Koshiba, Japanese illustrator who helped work on the manga called Remote from 2002
Fictional characters Kiri Koshiba a fictional character who's also a hairstylist, and the main protagonist from the manga, Beauty Pop. Azami Koshiba, a Java sparrow and supporting character from the bird-themed video game/interactive novel, Hatoful Boyfriend for Microsoft Windows PC.
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