United Kingdom Number 1 movies in 1991
| Title | Weeks | ||
| 23. |  | The Addams Family (1991) | 3 |
| 22. |  | Hot Shots! (1991) | 1 |
| 21. |  | Point Break (1991) | 2 |
| 20. |  | The Fisher King (1991) | 2 |
| 19. |  | City Slickers (1991) | 1 |
| 18. |  | The Commitments (1991) | 3 |
| 17. |  | Robin Hood: Prince of Thieves (1991) | 5 |
| 16. |  | Terminator 2: Judgment Day (1991) | 7 |
| 15. |  | The Naked Gun 2 ½: The Smell of Fear (1991) | 3 |
| 14. |  | The Silence of the Lambs (1991) | 3 |
| 13. |  | Mermaids (1991) | 1 |
| 12. |  | Misery (1991) | 2 |
| 11. |  | The Doors (1991) | 1 |
| 10. |  | Sleeping With the Enemy (1991) | 3 |
| 9. |  | Highlander II: The Quickening (1991) | 1 |
| 8. |  | Dances With Wolves (1990) | 1 |
| 7. |  | Look Who's Talking Too (1991) | 2 |
| 6. |  | Green Card (1991) | 1 |
| 5. |  | The Godfather Part III (1990) | 1 |
| 4. |  | Three Men and a Little Lady (1991) | 4 |
| 3. |  | Kindergarten Cop (1990) | 1 |
| 2. |  | Rocky V (1991) | 1 |
| 1. |  | Arachnophobia (1991) | 3 |