- 29 [All Books]
- 2 Justin O'Brien
- 2 Garry O'Connor
- 1 John O'Connor
- 1 Leslie O'Dell
- 1 Rosie O'Donnell
- 1 Olivia Marie O'Grady
- 1 O'Neill
- 3 Eugene O'Neill
- 1 Andre Obey
- 1 Donald Oliver
- 2 Laurence Olivier
- 2 Richard Olivier
- 1 Constance Olsheski
- 1 Jerry Orbach
- 1 Giacomo Oreglia
- 1 Stephen Orgel
- 1 Leslie Orrey
- 1 Joe Orton
- 1 John Osborne
- 1 Beatrice K. Otto
- 1 Richard Ouzounian
- 1 M. Owen Lee
- 1 Lyn Oxenford