O
- Pat O'Brien
- Carroll O'Connor by Richard Baratz
- Nell O'Day by Alex Gard (Housed in the Billy Rose Theatre Collection of the New York Public Library)
- Rosie O'Donnell
- Kelli O'Hara
- Eugene O'Neill by Alex Gard (Housed in the Billy Rose Theatre Collection of the New York Public Library)
- Laurence Olivier by Don Bevan
- Sono Osato by Alex Gard (Housed in the Billy Rose Theatre Collection of the New York Public Library)
- E. W. Osborn by Alex Gard (Housed in the Billy Rose Theatre Collection of the New York Public Library)
- Brad Oscar (The Producers, 13 March 2002)
- Donny Osmond ("Beauty and the Beast", October 27, 2006)
- Marie Osmond (October 27, 2006)
- Catherine Dale Owen by Alex Gard (Housed in the Billy Rose Theatre Collection of the New York Public Library)
Read more about this topic: List Of Caricatures At Sardi's Restaurant