UK Box Office 31st December, 1976
| Title | Weekend | Week | Total | % Change | Total Weeks | ||
| 1 (new) |  | The Enforcer (1976) | £967,383 | £967,383 | £967,383 | new | 1 |
| 2 (new) |  | King Kong (1976) | £623,066 | £623,066 | £623,066 | new | 1 |
| 3 (1) |  | Marathon Man (1976) | £217,530 | £315,419 | £1,291,040 | -23% | 3 |