Domestic Box Office For April 1987
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | The Secret of My Success | $66,995,879 | 1,346 | $7,766,452 | 11.6% | 1,336 | Apr 10 | - | Universal Pictures |
| 2 | Police Academy 4: Citizens on Patrol | $28,061,343 | 1,750 | $8,482,487 | 30.2% | 1,750 | Apr 3 | - | Warner Bros. |
| 3 | Project X | $18,532,286 | 1,025 | $3,309,985 | 17.9% | 1,022 | Apr 17 | - | Twentieth Century Fox |
| 4 | The Aristocats 1987 Re-release | $17,452,658 | 1,491 | $3,168,071 | 18.2% | 1,480 | Apr 10 | - | Walt Disney Studios Motion Pictures |
| 5 | Extreme Prejudice | $11,307,844 | 1,071 | $3,498,957 | 30.9% | 1,071 | Apr 24 | - | TriStar Pictures |
| 6 | My Demon Lover | $3,922,273 | 1,115 | $1,815,583 | 46.3% | 1,115 | Apr 24 | - | New Line Cinema |
| 7 | Prick Up Your Ears | $1,654,743 | 36 | $38,643 | 2.3% | 1 | Apr 17 | - | The Samuel Goldwyn Company |
| 8 | Making Mr. Right | $1,584,970 | 296 | $444,756 | 28.1% | 296 | Apr 10 | - | Orion Pictures |
| 9 | Three for the Road | $1,539,000 | - | - | - | - | Apr 10 | - | New Century |
| 10 | Campus Man | $989,528 | 307 | $319,218 | 32.3% | 307 | Apr 10 | May 21 | Paramount Pictures |
| 11 | Gothic | $916,172 | 20 | $32,061 | 3.5% | 1 | Apr 10 | - | Vestron Pictures |
| 12 | The Princess Academy | $205,000 | - | - | - | - | Apr 24 | - | Empire Pictures |
| 13 | Heaven | $77,886 | - | - | - | - | Apr 17 | May 14 | Island Pictures |
| 14 | Nice Girls Don't Explode | $65,000 | - | - | - | - | Apr 3 | - | New World Pictures |
| 15 | Forever, Lulu | $36,786 | 1 | $10,126 | 27.5% | 1 | Apr 24 | May 28 | TriStar Pictures |
