Dyke is a surname. Notable people with the surname include:
Edwin Dyke (1842–1919), English clergyman and cricketerGreg Dyke (born 1947), former Director General of the BBC and current Chairman of Brentford Football ClubJohn Dyke (rugby player) (1884–1960), Wales international rugby union playerJohn Dyke, lead singer of German synthpop band DykoJohn and Jennie Dyke, American aircraft designersWilliam Dyke (born 1930), mayor of Madison, WisconsinSir William Hart Dyke, 7th Baronet (1837–1931)