Sadig Huseynov was born in the village of Atakishili, Kurdamir.

He worked at the Azerbaijan Drama Theater until 1974. He was an actor of the theater studio, working under the "Azerbaijanfilm" film studio. In the 1990s, he became famous for his role as the wise Savalan baba in the children's television program.

He starred in the films of foreign film producers "Love at First Sight" (1975, director Rezo Esadze / Russia, Georgia), "Night in Chile" (1977, directors Sebastian Alarcon, Alexander Kocharev / Russia) as Rolando Machuk, "Time of Red Apples" (1981, director Oleg Nikolayevsky / Russia) as Hasanbay, "Coup by Instruction 107" (1982, directors Zahid Sabitov, Georgi Bzarov / Uzbekistan) as a typographer, "Jaguar" (1986, director Sebastian Alarcon / Russia), "Nothing Happened" (1989, director Muhammed Soyunkhanov / Turkmenistan), "Broken Bridges" (1996, director Rafik Puya / USA) as Karimov, "Prisoner of Cell Number Five" (Turkey).

Honored Artist (1974) Sadig Huseynov died in 2003.

Actor Sadig Huseynov is the father of actor Arzu Huseynov.