| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Wanted | $1,072,877 | - | 151 | - | $7,105 | $1,072,877 | 1 | United International Pictures | true | false |
| 2 | 1 | Rak/Saam/Sao | $269,699 | -59.5% | 73 | -26 | $3,694 | $1,148,518 | 2 | GMM Tai Hub (GTH) | false | false |
| 3 | 2 | Kung Fu Panda | $132,477 | -49.7% | 67 | +9 | $1,977 | $985,967 | 3 | United International Pictures | false | false |
| 4 | 4 | Puppy Love | $77,097 | -64.6% | 52 | -13 | $1,482 | $353,812 | 2 | Mongkol Film Company | false | false |
| 5 | 5 | Get Smart | $70,337 | -66.9% | 57 | -7 | $1,233 | $487,254 | 2 | N/A | false | false |
| 6 | 3 | The Incredible Hulk | $67,455 | -72.9% | 72 | -7 | $936 | $1,172,444 | 3 | United International Pictures | false | false |
| 7 | - | My Sassy Girl | $23,606 | - | 24 | - | $983 | $23,606 | 1 | Mongkol Major | true | false |
| 8 | 7 | Sex and the City | $9,490 | -65.8% | 8 | -14 | $1,186 | $484,580 | 4 | Warner Bros. | false | false |
| 9 | 6 | The Happening | $6,851 | -90.6% | 21 | -32 | $326 | $505,496 | 3 | 20th Century Fox International | false | false |
| 10 | 9 | Eiga: Kurosagi | $3,346 | -67.8% | 6 | -3 | $557 | $17,916 | 2 | M Pictures | false | false |
| 11 | 11 | 21 | $1,992 | -62.2% | 1 | - | $1,992 | $113,282 | 7 | Sony Pictures Releasing | false | false |
| 12 | 8 | The Chronicles of Narnia: Prince Caspian | $1,893 | -88.8% | 2 | -33 | $946 | $2,361,054 | 5 | Walt Disney Pictures | false | false |
| 13 | 13 | Mongol: The Rise of Genghis Khan | $1,612 | -28.5% | 1 | - | $1,612 | $4,881 | 2 | J-Bics | false | false |
| 14 | 12 | Indiana Jones and the Kingdom of the Crystal Skull | $1,336 | -58.7% | 2 | - | $668 | $2,008,687 | 6 | United International Pictures | false | false |
| 15 | - | Mr. Brooks | $1,280 | - | 1 | - | $1,280 | $1,280 | 1 | N/A | true | false |
| 16 | 14 | The Other Boleyn Girl | $304 | -81.5% | 1 | -3 | $304 | $94,208 | 4 | M Pictures | false | false |
| 17 | 10 | Good Morning, Luang Prabang | $31 | -99.5% | 1 | -17 | $31 | $313,862 | 4 | N/A | false | false |
| 18 | 15 | Muay Thai Giant | $23 | -97.4% | 1 | -9 | $23 | $254,469 | 4 | Mongkol Film Company | false | false |
