Domestic Box Office For March 1971
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Vanishing Point | $12,442,673 | - | - | - | - | Mar 10 | - | Twentieth Century Fox |
| 2 | THX 1138 | $2,437,000 | - | - | - | - | Mar 11 | - | Warner Bros. |
| 3 | The Beguiled | $1,100,000 | - | - | - | - | Mar 31 | - | Universal Pictures |
