| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Cloverfield | $557,112 | - | 135 | - | $4,126 | $557,112 | 1 | United International Pictures | true | false |
| 2 | 1 | Mam diaw hua liam hua laem | $196,298 | -60.7% | 80 | -43 | $2,453 | $834,642 | 2 | Mongkol Film Company | false | false |
| 3 | 2 | Hitman | $123,065 | -68% | 69 | -28 | $1,783 | $783,193 | 2 | 20th Century Fox International | false | false |
| 4 | - | Saw IV | $96,390 | - | 38 | - | $2,536 | $96,390 | 1 | N/A | true | false |
| 5 | - | Mr. Magorium's Wonder Emporium | $84,090 | - | 28 | - | $3,003 | $84,090 | 1 | Mongkol Major | true | false |
| 6 | 4 | National Treasure: Book of Secrets | $20,844 | -72.7% | 41 | -20 | $508 | $2,791,255 | 5 | Walt Disney Pictures | false | false |
| 7 | 3 | Aliens vs. Predator: Requiem | $18,632 | -80.3% | 43 | -19 | $433 | $2,131,093 | 4 | 20th Century Fox International | false | false |
| 8 | - | Eastern Promises | $13,321 | - | 6 | - | $2,220 | $13,321 | 1 | M Pictures | true | false |
| 9 | 7 | Elizabeth: The Golden Age | $9,960 | -73.4% | 13 | -3 | $766 | $180,680 | 3 | N/A | false | false |
| 10 | 5 | The Three Cripples | $7,738 | -86.2% | 27 | -27 | $286 | $1,008,183 | 4 | Pranakorn Films | false | false |
| 11 | 11 | Inugami-ke no ichizoku 2008 Re-release | $6,129 | -46% | 2 | - | $3,064 | $22,202 | 2 | M Pictures | false | false |
| 12 | 8 | Mr. Woodcock | $5,991 | -74.6% | 12 | - | $499 | $39,148 | 2 | Mongkol Major | false | false |
| 13 | 12 | Across the Universe | $5,301 | -32.2% | 1 | - | $5,301 | $26,899 | 3 | N/A | false | false |
| 14 | 6 | Konbai the Movie | $4,127 | -89.9% | 20 | -31 | $206 | $908,683 | 4 | Mongkol Film Company | false | false |
| 15 | 9 | I Am Legend | $1,762 | -87.8% | 4 | -17 | $440 | $2,657,143 | 6 | Warner Bros. | false | false |
| 16 | 13 | Beowulf | $1,326 | -70.8% | 1 | -1 | $1,326 | $1,536,807 | 10 | Warner Bros. | false | false |
| 17 | 10 | Alvin and the Chipmunks | $939 | -91.8% | 4 | -25 | $234 | $442,588 | 5 | 20th Century Fox International | false | false |
| 18 | 15 | The Golden Compass | $680 | -47.4% | 2 | -1 | $340 | $2,209,600 | 7 | Mongkol Major | false | false |
| 19 | 18 | Lust, Caution | $448 | -29.7% | 2 | +1 | $224 | $49,988 | 9 | Walt Disney Pictures | false | false |
