Alec Rupen Costandinos, (born Alexandre Garbis Sarkis Kouyoumdjian on 20 March 1944 in Cairo, Egypt) is a French composer, music producer, songwriter and singer of the 1970s, known for his contributions to disco music.
He began his career as a publisher and producer for various artists, including French pop star Claude Francois and chanteuse Dalida.
After writing Cerrone's "Love in C Minor" (1976), Costandinos was signed to Barclay Records.
Costandinos went on to release a number of wildly successful records under the prominent American disco label, Casablanca.
According to what he declared in one of his rare interviews on 11 December 2011 at Open House Radio (Miami), his disco works were basically influenced by Philly sound, classical and melodic Italian music.