Portuguese Box Office For May 2004
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | The Day After Tomorrow | $1,944,365 | 58 | - | - | - | May 27 | - | CLMC Multimedia |
| 2 | Troy | $1,702,392 | 63 | - | - | - | May 13 | - | Columbia Filmes |
| 3 | Van Helsing | $842,426 | 46 | - | - | - | May 6 | - | Zon Lusomundo Audiovisuais |
| 4 | Eternal Sunshine of the Spotless Mind | $266,236 | 16 | - | - | - | May 20 | - | Prisvídeo |
| 5 | Bad Education | $225,691 | 22 | - | - | - | May 27 | - | Prisvídeo |
| 6 | Win a Date with Tad Hamilton! | $123,153 | 19 | - | - | - | May 20 | - | Zon Lusomundo Audiovisuais |
| 7 | The Miracle According to Salomé | $79,581 | 17 | - | - | - | May 13 | - | Atalanta Filmes |
| 8 | The Dreamers | $78,830 | 6 | - | - | - | May 6 | - | LNK Filmes |
| 9 | The Butterfly Effect | $63,607 | 10 | - | - | - | May 6 | - | Zon Lusomundo Audiovisuais |
| 10 | Touching the Void | $19,721 | 4 | - | - | - | May 20 | - | - |
| 11 | The Company | $16,631 | 5 | - | - | - | May 13 | - | Columbia Filmes |
| 12 | Radio | $15,560 | 14 | - | - | - | May 13 | - | CLMC Multimedia |
| 13 | They're Watching Us 2004 Re-release | $12,378 | 2 | - | - | - | May 20 | - | Atalanta Filmes |
