Hidaka (written: 日高) is a Japanese surname. Notable people with the surname include:
Hatsuo Hidaka (born 1915), officer and ace fighter pilot in the Imperial Japanese NavyHidaka Sōnojō (1848–1932), admiral of the early modern Imperial Japanese NavyHiroaki Hidaka (1962–2006), Japanese serial killerIkuto Hidaka (born 1972), Japanese professional wrestlerKeita Hidaka (born 1990), Japanese footballerMayumi Hidaka (born 1981), Japanese actressMitsuhiro Hidaka (born 1986), Japanese singer, rapper, actor, and dancerNoriko Hidaka (born 1962), Japanese voice actressNoritaka Hidaka (born 1947), former Japanese football playerRina Hidaka (born 1994), Japanese voice actressRyo Hidaka (born 1990), professional Japanese baseball playerSumiko Hidaka (1923–2002), Japanese actressTakeshi Hidaka (born 1977), Japanese professional baseball catcherTakuma Hidaka (born 1983), Japanese footballerTomoki Hidaka (born 1980), Japanese football playerUsaburo Hidaka, former Japanese football playerFictional characters:
Ken Hidaka, an anime character from Weiss KreuzMamoru Hidaka, a character from Creamy Mami, the Magic AngelYuri Hidaka, a character from Hikaru no Go