| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Bangkok Traffic (Love) Story | $1,705,191 | - | 207 | - | $8,237 | $1,705,191 | 1 | GMM Tai Hub (GTH) | true | false |
| 2 | - | Law Abiding Citizen | $162,535 | - | 75 | - | $2,167 | $162,535 | 1 | Mongkol Major | true | false |
| 3 | 2 | G-Force | $107,902 | -60.1% | 61 | -8 | $1,768 | $1,329,153 | 3 | Walt Disney Pictures | false | false |
| 4 | 1 | Oh My Ghosts! | $72,605 | -77% | 61 | -47 | $1,190 | $1,648,367 | 3 | Pranakorn Films | false | false |
| 5 | 3 | The Ugly Truth | $63,131 | -64.9% | 19 | - | $3,322 | $312,843 | 2 | Sony Pictures Releasing | false | false |
| 6 | - | New York, I Love You | $16,887 | - | 5 | - | $3,377 | $16,887 | 1 | N/A | true | false |
| 7 | 6 | The Time Traveler's Wife | $7,040 | -71.5% | 11 | -11 | $640 | $116,643 | 3 | Warner Bros. | false | false |
| 8 | 4 | Sorority Row | $5,032 | -90.5% | 36 | -14 | $139 | $211,652 | 3 | Mongkol Major | false | false |
| 9 | 7 | Fame | $4,985 | -78.6% | 17 | -7 | $293 | $38,009 | 2 | M Pictures | false | false |
| 10 | 11 | Bad Lieutenant: Port of Call New Orleans | $4,946 | -67% | 8 | +3 | $618 | $25,201 | 2 | N/A | false | false |
| 11 | 5 | The Proposal | $3,409 | -88.6% | 14 | -20 | $243 | $770,641 | 5 | Walt Disney Pictures | false | false |
| 12 | 8 | The Sanctuary | $3,112 | -85.6% | 35 | -8 | $88 | $34,498 | 2 | N/A | false | false |
| 13 | 10 | District 9 | $1,286 | -92.4% | 11 | -21 | $116 | $557,280 | 5 | M Pictures | false | false |
| 14 | 16 | Harry Potter and the Half-Blood Prince | $1,113 | +18.2% | 1 | - | $1,113 | $4,144,272 | 14 | Warner Bros. | false | false |
| 15 | - | Tidal Wave | $980 | - | 1 | - | $980 | $980 | 1 | N/A | true | false |
| 16 | 20 | Whiteout | $840 | +27.9% | 1 | -2 | $840 | $137,399 | 5 | Warner Bros. | false | false |
| 17 | 14 | Broken Embraces | $634 | -51.4% | 1 | - | $634 | $6,441 | 3 | M Pictures | false | false |
| 18 | 18 | The Final Destination | $523 | -24.4% | 1 | - | $523 | $1,368,400 | 7 | Warner Bros. | false | false |
| 19 | 9 | Phobia 2 | $499 | -97.2% | 8 | -32 | $62 | $3,329,253 | 6 | GMM Tai Hub (GTH) | false | false |
| 20 | 22 | Transformers: Revenge of the Fallen | $409 | -11.7% | 1 | - | $409 | $6,023,990 | 17 | United International Pictures | false | false |
| 21 | 17 | Land of the Lost | $318 | -63.2% | 3 | -3 | $106 | $39,236 | 7 | United International Pictures | false | false |
| 22 | 12 | Pandorum | $255 | -96.2% | 5 | -25 | $51 | $205,563 | 4 | Mongkol Major | false | false |
| 23 | 23 | Inglourious Basterds | $224 | -45.5% | 1 | -1 | $224 | $310,616 | 9 | United International Pictures | false | false |
| 24 | 19 | Rookies the Movie: Graduation | $194 | -71.5% | 1 | - | $194 | $5,391 | 4 | N/A | false | false |
| 25 | 24 | Crows Zero II | $185 | -31.2% | 1 | - | $185 | $9,351 | 6 | N/A | false | false |
| 26 | 25 | Ponyo | $170 | -34.9% | 2 | - | $85 | $27,906 | 8 | M Pictures | false | false |
| 27 | 15 | 9 | $145 | -85.6% | 1 | - | $145 | $20,271 | 6 | M Pictures | false | false |
