Domestic Box Office For December 1978
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Superman | $134,218,018 | 817 | $7,465,343 | 5.6% | 508 | Dec 15 | - | Warner Bros. |
| 2 | Every Which Way But Loose | $85,196,485 | 1,275 | $10,272,294 | 12.1% | 1,275 | Dec 20 | - | Warner Bros. |
| 3 | The Deer Hunter | $48,979,328 | - | - | - | - | Dec 8 | - | Universal Pictures |
| 4 | Invasion of the Body Snatchers | $24,946,533 | 445 | $1,298,129 | 5.2% | 445 | Dec 22 | - | United Artists |
| 5 | Moment by Moment | $10,963,824 | - | - | - | - | Dec 22 | - | Universal Pictures |
| 6 | The Brink's Job | $7,909,950 | - | - | - | - | Dec 8 | - | Universal Pictures |
| 7 | King of the Gypsies | $7,325,177 | - | - | - | - | Dec 20 | - | Paramount Pictures |
| 8 | Force 10 from Navarone | $7,230,000 | - | - | - | - | Dec 22 | - | American International Pictures (AIP) |
| 9 | Brass Target | $5,011,158 | 334 | $354,797 | 7.1% | 334 | Dec 22 | - | Metro-Goldwyn-Mayer (MGM) |
| 10 | Uncle Joe Shannon | $494,797 | - | - | - | - | Dec 15 | - | United Artists |
