Ahmet Haldun Dormen (born 5 April 1928) is a Turkish theater, movie and TV series actor and film director. Dormen is of Turkish Cypriot descent.

His father Sait Ömer Bey was a Cypriot businessman, while his mother Nimet Rüştü Hanım was the daughter of a pasha from Istanbul. His family settled in Şişli before Dormen's first birthday. He had his first acting experience on stage as a junior high school student at the Galatasaray High School, portraying a character in a play titled Demirbank. He finished his education at the Robert College. At the age of eight, his left foot was injured due to an accident.