Joseph Adler (October 5, 1940 – April 16, 2020) was an American theatre director.

Other directorial credits include several independent feature films, a video version of the Broadway hit comedy Doubles and a cable TV series.

He was nominated 21 times (14 at GableStage) and 10 times won the Carbonell Award for Best Director: The Shadow Box (Coconut Grove Playhouse); The Killing of Sister George (Players Theatre); A Lesson Before Dying, James Joyce's The Dead, Edward Albee's The Goat, Frozen, The Pillowman, Lieutenant of Inishmore, Ruined, and Adding Machine (GableStage).

GableStage operates out of the historic Coral Gables Biltmore Hotel.

Adler was awarded the George Abbott Award for "significant contributions to the artistic life and cultural development of greater Miami, Fort Lauderdale, and the Palm Beaches.