Domestic Box Office For May 1981
| Rank | Release | Gross | Theaters | Total Gross | Release Date | Distributor |
|---|---|---|---|---|---|---|
| 1 | The Four Seasons | $50,427,646 | 623 | $50,427,646 | May 22 | Universal Pictures |
| 2 | Bustin' Loose | $31,261,269 | 828 | $31,261,269 | May 22 | Universal Pictures |
| 3 | Friday the 13th: Part 2 | $21,722,776 | 1,350 | $21,722,776 | Apr 30 | Paramount Pictures |
| 4 | Outland | $17,374,595 | 331 | $17,374,595 | May 22 | Warner Bros. |
| 5 | The Legend of the Lone Ranger | $12,617,845 | 1,018 | $12,617,845 | May 22 | Universal Pictures |
| 6 | King of the Mountain | $1,791,147 | 703 | $1,791,147 | May 1 | Universal Pictures |
| 7 | Cattle Annie and Little Britches | $388,664 | 215 | $534,816 | Apr 24 | Universal Pictures |
