Sumitani

Sumitani is a surname. Notable people with the surname include:
 * Ginjiro Sumitani (炭谷 銀仁朗), Japanese baseball player
 * Masaki Sumitani (住谷 正樹), Japanese comedian and wrestler
 * Masamine Sumitani (隅谷 正峯), Japanese swordsmith
 * Sosuke Sumitani (炭谷 宗佑), Japanese television announcer