Alan Mandell was an actor who worked in television, film, and theater. He made appearances on Harold Robbins' 79 Park Avenue, Baretta, Grey's Anatomy, and The Six Million Dollar Man.

Mandell had a long career in film in addition to his work on television. He played Rabbi Marshak in A Serious Man and Dease in Velvet Buzzsaw. Mandell also acted in Hedwig and the Angry Inch and Shortbus, both of which were directed by John Cameron Mitchell.

Mandell was well known for his career in theater. He played Lucky in a performance of Samuel Beckett's Waiting for Godot for an audience of 1,400 inmates at San Quentin. Beckett himself would later direct Mandell in productions of Waiting for Godot and Endgame in Europe. Mandell continued to appear in dozens of Beckett plays over the decades. He later advised Keanu Reeves and Alex Winter before they acted in Waiting for Godot on Broadway.