Kobayakawa (written: 小早川) is a Japanese surname. Notable people with the surname include:
Kobayakawa Hideaki (小早川 秀秋) (1577–1602), Japanese daimyōKobayakawa Hidekane (小早川 秀包) (1566–1601), Japanese samuraiTakehiko Kobayakawa (小早川 毅彦) (born 1961), Japanese baseball playerKobayakawa Takakage (小早川 隆景) (1533–1597), Japanese samurai and daimyōFictional characters:
Yutaka Kobayakawa (小早川 ゆたか), character from Lucky StarMiyuki Kobayakawa (小早川 美幸), protagonist of the manga series You're Under Arrest (manga)Sena Kobayakawa (小早川 瀬那), protagonist of the manga series Eyeshield 21Kobayakawa (Initial D) (小早川), a character of the manga series Initial DAn Kobayakawa (小早川 杏), a character of the manga series World Trigger