- Woody Allen as Alvy Singer
- Diane Keaton as Annie Hall
- Tony Roberts as Rob
- Carol Kane as Allison Portchnik
- Paul Simon as Tony Lacey
- Janet Margolin as Robin
- Shelley Duvall as Pam
- Christopher Walken[a] as Duane Hall
- Colleen Dewhurst as Mrs. Hall
- Donald Symington as Mr. Hall
- Joan Newman as Mrs. Singer
- Tracey Walter as Actor in Rob's T.V. Show
- Mordecai Lawner as Alvy's father
- Marshall McLuhan as himself
Truman Capote has a cameo in the film. Alvy is making quips about people walking by. He says "There's the winner of the Truman Capote look-alike contest" as Truman Capote walks through the frame.[6] Several actors who later gained a higher profile had small parts in the movie: John Glover as Annie's actor boyfriend, Jerry; Jeff Goldblum as a man who "forgot [his] mantra" at Tony Lacey's Christmas party; Beverly D'Angelo as an actress in Rob's TV show; Christopher Walken as Annie's brother, Duane; and Sigourney Weaver, in her film debut, in the closing sequence as Alvy's date at the movie theater. Laurie Bird also appears, two years before her suicide.
