List of American films of 1978
This is a list of American films released in 1978.
Box office
The highest-grossing American films released in 1978, by domestic box office gross revenue, are as follows:| Rank | Title | Distributor | Domestic gross |
| 1 | Grease | Paramount | $159,978,870 |
| 2 | Superman | Warner Bros. | $134,218,018 |
| 3 | National Lampoon’s Animal House | Universal | $120,091,123 |
| 4 | Every Which Way but Loose | Warner Bros. | $85,196,485 |
| 5 | Heaven Can Wait | Paramount | $81,640,278 |
| 6 | Hooper | Warner Bros. | $78,000,000 |
| 7 | Jaws 2 | Universal | $77,737,272 |
| 8 | Revenge of the Pink Panther | United Artists | $49,579,269 |
| 9 | The Deer Hunter | Universal | $48,979,328 |
| 10 | Halloween | Compass International | $47,000,000 |