Diamantopoulos or Diamandopoulos (Greek: Διαμαντόπουλος) is a Greek surname. The feminine form is Diamantopoulou (Διαμαντοπούλου). It may refer to:
Adamantios Diamantopoulos (born 1958), Greek-British business scholar
Anna Diamantopoulou, Greek politician
Athanasios Diamandopoulos (born 1943), Greek physician
Chris Diamantopoulos, a Canadian actor
Constantine Diamantopoulos, fighter of the Greek War of Independence
Costas Diamantopoulos (b. 1940), Greek football player
Costas Diamantopoulos (b. 1946), Greek basketball player and coach
Diamantis Diamantopoulos (1914-1995), Greek painter
Dimitris Diamantopoulos, a Greek association football player
Evangelos Diamantopoulos (born 1980), Greek MP elected in June 2012
Georgios Diamantopoulos (fighter), fighter of the Greek War of Independence
Giorgos Diamantopoulos, a Greek basketball player
Iakovos Diamantopoulos (1905-1993), Greek physician and politician
Stavros Diamantopoulos (born 1947), Greek football manager
Takis Diamantopoulos, a Greek photographer
Thanassis Diamantopoulos, Greek political scholar
Vasiliki Diamantopoulou, Greek water polo player
Vasilis Diamantopoulos, a Greek actor
