| Passage Theatre, The | The Passage Theatre | 1984 | 1 | |
| Pasadena Playhouse Senior Players | Pasadena Playhouse Senior Players | 1936 – 1946 | 9 | |
| Pasadena Playhouse College of Theatre Arts | Pasadena Playhouse College of Theatre Arts | 1943 – 1966 | 28 | |
| Pasadena Playhouse | Pasadena Playhouse | 1927 – 1965 | 15 | |
| Pasadena Community Players | Pasadena Community Players | 1921 – 1934 | 6 | |
| Panellinios Dramatikos Thiasos | Panellinios Dramatikos Thiasos | 1899 – 1900 | 3 | |
| Pan Asian Repertory Theatre | Pan Asian Repertory Theatre | 1993 – 2021 | 2 | |
| Painted Bird Theatre | Painted Bird Theatre | 2010 | 8 | |
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