| James Franciscus | Brent |
| Kim Hunter | Zira |
| Maurice Evans | Dr. Zaius |
| Linda Harrison | Nova |
| Paul Richards | Mendez |
| Victor Buono | Fat Man |
| James Gregory | Ursus |
| Jeff Corey | Caspay |
| Natalie Trundy | Albina |
| Thomas Gomez | Minister |
| Director | Ted Post |
| Producer | Mort Abrahams; Arthur P. Jacobs |
| Writer | Pierre Boulle; Paul Dehn |
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