Diamantopoulos or Diamandopoulos () is a Greek surname. The feminine form is Diamantopoulou (Διαμαντοπούλου). It may refer to:

(born 1958), Greek-British business scholar

Anna Diamantopoulou (born 1959), Greek politician

Athanasios Diamandopoulos (born 1943), Greek physician

Chris Diamantopoulos (born 1975), Canadian actor

, fighter of the Greek War of Independence

, Greek football player

, Greek basketball player and coach

(1914-1995), Greek painter

Dimitris Diamantopoulos (born 1988), Greek association football player

(born 1980), Greek MP elected in June 2012

, fighter of the Greek War of Independence

Giorgos Diamantopoulos (born 1980), Greek basketball player

(1905-1993), Greek physician and politician

Stavros Diamantopoulos (born 1947), Greek football manager

Takis Diamantopoulos (born 1939), Greek photographer

, Greek political scholar

Vasilis Diamantopoulos (1920-1999), Greek actor

Greek-language surnames

Surnames

Diamantopoulos