| # | Title | Jul 17 - 19 | % Chg. | Theaters | Weeks | AVG | Cumulative | ||
| 1 | Harry Potter and the Half-Blood Prince | $ 77,835,727 | 4,325 | 1 | $ 17,997 | $ 158,022,354 | |||
| 2 | Ice Age: Dawn of the Dinosaurs | 17,561,406 | -36.4 | 3,817 | 3 | 4,601 | 151,865,987 | ||
| 3 | Transformers: ROTF | 13,691,487 | -43.5 | 3,857 | 4 | 3,550 | 363,808,123 | ||
| 4 | Brüno | 8,318,385 | -72.8 | 2,759 | 2 | 3,015 | 49,533,475 | ||
| 5 | The Proposal | 8,289,707 | -21.8 | 3,043 | 5 | 2,724 | 128,083,273 | ||
| 6 | The Hangover | 8,177,272 | -17.7 | 2,667 | 7 | 3,066 | 235,744,423 | ||
| 7 | Public Enemies | 7,748,235 | -43.8 | 3,118 | 3 | 2,485 | 79,639,205 | ||
| 8 | Up | 3,172,014 | -32.7 | 1,708 | 8 | 1,857 | 279,583,282 | ||
| 9 | My Sister's Keeper | 2,828,367 | -34.1 | 1,967 | 4 | 1,438 | 41,507,695 | ||
| 10 | I Love You, Beth Cooper | 2,766,863 | -43.8 | 1,872 | 2 | 1,478 | 10,363,239 |
Source: Box Office Guru
