| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Iron Man | $1,046,772 | - | 174 | - | $6,015 | $1,285,657 | 1 | United International Pictures | true | false |
| 2 | 1 | Phobia | $586,724 | -36.9% | 90 | -21 | $6,519 | $1,885,674 | 2 | N/A | false | false |
| 3 | - | Teng's Angel | $470,103 | - | 91 | - | $5,165 | $493,758 | 1 | Mongkol Film Company | true | false |
| 4 | 2 | The Forbidden Kingdom | $74,832 | -78.1% | 47 | -41 | $1,592 | $1,531,726 | 3 | Mongkol Major | false | false |
| 5 | 3 | Three Kingdoms | $39,602 | -69.6% | 35 | -5 | $1,131 | $205,840 | 2 | N/A | false | false |
| 6 | - | The Eye | $24,254 | - | 20 | - | $1,212 | $28,147 | 1 | M Pictures | true | false |
| 7 | 4 | Superhero Movie | $20,391 | -78.7% | 26 | -15 | $784 | $440,637 | 3 | M Pictures | false | false |
| 8 | 6 | Nim's Island | $18,838 | -70.2% | 37 | -8 | $509 | $99,704 | 2 | Mongkol Film Company | false | false |
| 9 | 5 | In the Name of the King: A Dungeon Siege Tale | $14,915 | -82.5% | 32 | -11 | $466 | $124,236 | 2 | United International Pictures | false | false |
| 10 | 8 | Untraceable | $7,026 | -75.1% | 9 | -5 | $780 | $43,923 | 2 | N/A | false | false |
| 11 | 10 | Horton Hears a Who! | $1,796 | -93.1% | 6 | -41 | $299 | $190,990 | 3 | 20th Century Fox International | false | false |
| 12 | 15 | Always: Sunset on Third Street 2 | $1,297 | +16.6% | 1 | - | $1,297 | $27,801 | 6 | Mongkol Major | false | false |
| 13 | 7 | Orahun | $1,180 | -96.5% | 4 | -40 | $295 | $714,881 | 4 | N/A | false | false |
| 14 | 16 | My Blueberry Nights | $809 | -24.6% | 1 | - | $809 | $49,576 | 7 | M Pictures | false | false |
| 15 | 9 | Dream Team | $708 | -97.5% | 2 | -37 | $354 | $1,111,907 | 5 | RS Film & Distribution | false | false |
| 16 | 18 | Once | $357 | -16.2% | 1 | - | $357 | $38,670 | 10 | Mongkol Major | false | false |
