Dark is a surname. Notable people with the surname include:
Alice Elliott Dark, American writer
Alvin Dark (born 1922), American baseball player and manager
Angel Dark (born 1982), Slovakian pornographic actress and model
Ben Dark (born 1972), Australian television presenter
Danny Dark (1938–2004), American TV announcer and voice actor
David Dark, American writer
Jacqueline Dark, Australian mezzo-soprano
Gregory Dark, (born 1957), American film director
Johnny Dark, American comedian
Fictional characters:
Joanna Dark, the protagonist in the video game Perfect Dark
