Domestic Box Office For January 1980
| Rank | Release | Gross | Theaters | Total Gross | Release Date | Distributor |
|---|---|---|---|---|---|---|
| 1 | Kramer vs. Kramer | $25,722,516 | 898 | $106,260,000 | Dec 19 | Columbia Pictures |
| 2 | Guyana: Cult of the Damned | $2,171,181 | 748 | $3,798,102 | Jan 25 | Universal Pictures |
| 3 | Windows | $2,128,395 | 46 | $2,128,395 | Jan 18 | Metro-Goldwyn-Mayer (MGM) |
| 4 | Heart Beat | $954,046 | 18 | $954,046 | Jan 18 | Warner Bros. |
