Alexandros Antonopoulos (Greek: Αλέξανδρος Αντωνόπουλος, Los Angeles, August 10, 1947) is a Greek actor with an important career in theater, cinema and television. He is best known for his roles in the films Safe Sex and Crying Out of Paradise, while in the theater he has played in plays by Euripides, Aristophanes, William Shakespeare, Henrik Ibsen, Luigi Pirandello, Noti Pergiali and many others.

Alexandros Antonopoulos was born in Los Angeles, where he lived the first years of his life. He is the grandson of Katina Paxinos and the godson of Alexis Minotis. He was for 17 years the announcer of the news bulletin at ERT, not being a journalist, when the then Director General of ERT (1974-1975) Dimitris Horn promoted actors for this position instead of journalists.