Triantafyllou () is a Greek surname. Notable people with the surname include:
Michael Triantafyllou, Greek mechanical engineer Panagiotis Triantafyllou, Greek wheelchair fencer Eugenia Triantafyllou, Greek writer Soti Triantafyllou (born 1957), Greek writer Pericles K. Triantafyllou (1934 - 2017), merchant and industrialist, founder of the canning company ELNAKO, president of Pannafpliakos-Iraklis F.C. and vice-president of Panaigialeios F.C.