He became known for his participation in the American edition of the reality television series Dancing with the Stars, the first season of which he won with partner Kelly Monaco.
He ran a production company specializing in live stage entertainment and television reality formats.
Alec Mazo is married to his long-time dancing partner dancer Edyta Śliwińska, a native of Poland.
Mazo returned to the ballroom on March 19 for Season 4, this time partnered with former supermodel Paulina Porizkova, but were the first couple eliminated.
Mazo competed for the title with partner, Grammy Award-winning singer, Toni Braxton in Season 7 of Dancing with the Stars.