Domestic Box Office For August 1979
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Apocalypse Now | $78,784,010 | 3 | $118,558 | 0.2% | 3 | Aug 15 | - | Metro-Goldwyn-Mayer (MGM) |
| 2 | North Dallas Forty | $26,079,312 | - | - | - | - | Aug 1 | - | Paramount Pictures |
| 3 | The Seduction of Joe Tynan | $19,595,168 | - | - | - | - | Aug 17 | - | Universal Pictures |
| 4 | Monty Python's Life of Brian | $19,398,164 | 5 | $140,034 | 0.7% | 5 | Aug 17 | - | Warner Bros. |
| 5 | More American Graffiti | $15,014,674 | - | - | - | - | Aug 3 | - | Universal Pictures |
| 6 | The Concorde... Airport '79 | $13,015,688 | - | - | - | - | Aug 3 | - | Universal Pictures |
| 7 | Americathon | $6,171,763 | - | - | - | - | Aug 10 | - | Metro-Goldwyn-Mayer (MGM) |
| 8 | Sunburn | $2,410,776 | - | - | - | - | Aug 10 | - | Paramount Pictures |
| 9 | Rich Kids | $1,856,122 | 5 | $53,064 | 2.9% | 5 | Aug 17 | - | Metro-Goldwyn-Mayer (MGM) |
