Omar Eldarov was born on December 21, 1927 in Derbent, Republic of Dagestan, Russia. His grandfather Husein Eldarov was a stonecutter. His parents were Hasan Eldarov and Elizaveta Eldarova. His mother was a very sensitive person. His father was an energetic, artistic and freedom-loving individual. He was an expert in soil sciences and taught in agricultural institutes in Baku and Gyandzha. Besides, Hasan Eldarov also organized a drama theatre in Derbent.
Omar Eldarov's elder brother Rashid followed in the footsteps of his father, he was greatly taken by the theatre and became an actor in the Azerbaijan Drama Theatre and also in the cinema. He was also a very good photographer.