| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Mam diaw hua liam hua laem | $499,270 | - | 123 | - | $4,059 | $499,270 | 1 | Mongkol Film Company | true | false |
| 2 | - | Hitman | $385,020 | - | 97 | - | $3,969 | $520,190 | 1 | 20th Century Fox International | true | false |
| 3 | 1 | Aliens vs. Predator: Requiem | $94,764 | -65.5% | 62 | -48 | $1,528 | $2,079,159 | 3 | 20th Century Fox International | false | false |
| 4 | 3 | National Treasure: Book of Secrets | $76,398 | -63.2% | 61 | -28 | $1,252 | $2,743,158 | 4 | Walt Disney Pictures | false | false |
| 5 | 2 | The Three Cripples | $55,921 | -73.7% | 54 | -16 | $1,035 | $977,922 | 3 | Pranakorn Films | false | false |
| 6 | 4 | Konbai the Movie | $40,932 | -75.8% | 51 | -20 | $802 | $891,920 | 3 | Mongkol Film Company | false | false |
| 7 | 5 | Elizabeth: The Golden Age | $37,474 | -47.4% | 16 | -2 | $2,342 | $158,350 | 2 | N/A | false | false |
| 8 | - | Mr. Woodcock | $23,586 | - | 12 | - | $1,965 | $23,586 | 1 | Mongkol Major | true | false |
| 9 | 6 | I Am Legend | $14,391 | -78.9% | 21 | -33 | $685 | $2,647,752 | 5 | Warner Bros. | false | false |
| 10 | 7 | Alvin and the Chipmunks | $11,423 | -73.3% | 29 | -19 | $393 | $438,789 | 4 | 20th Century Fox International | false | false |
| 11 | - | Inugami-ke no ichizoku 2008 Re-release | $11,359 | - | 2 | - | $5,679 | $11,359 | 1 | M Pictures | true | false |
| 12 | 10 | Across the Universe | $7,823 | +16.3% | 1 | - | $7,823 | $17,852 | 2 | N/A | false | false |
| 13 | 11 | Beowulf | $4,545 | -13.1% | 2 | - | $2,272 | $1,533,243 | 9 | Warner Bros. | false | false |
| 14 | 8 | The Warlords | $1,894 | -87.8% | 6 | -19 | $315 | $559,036 | 5 | Mongkol Major | false | false |
| 15 | 9 | The Golden Compass | $1,292 | -82% | 3 | -3 | $430 | $2,208,513 | 6 | Mongkol Major | false | false |
| 16 | 13 | Feast of Love | $1,236 | -36.3% | 1 | - | $1,236 | $13,873 | 4 | M Pictures | false | false |
| 17 | 12 | The Life of Buddha | $659 | -82.2% | 5 | -4 | $131 | $482,515 | 6 | N/A | false | false |
| 18 | 15 | Lust, Caution | $637 | -50% | 1 | -2 | $637 | $49,092 | 8 | Walt Disney Pictures | false | false |
| 19 | 14 | Love of Siam | $584 | -55.2% | 1 | - | $584 | $1,305,125 | 8 | Mongkol Film Company | false | false |
| 20 | 16 | No Reservations | $43 | -82.4% | 1 | - | $43 | $88,774 | 7 | Warner Bros. | false | false |
