| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Inkheart | $423,346 | - | 105 | - | $4,031 | $423,346 | 1 | Mongkol Major | true | false |
| 2 | 2 | Hod na hiaw 966 | $317,476 | -35.6% | 86 | -38 | $3,691 | $1,089,595 | 2 | RS Film & Distribution | false | false |
| 3 | 1 | Red Cliff II | $237,109 | -54.8% | 90 | -37 | $2,634 | $992,323 | 2 | Mongkol Major | false | false |
| 4 | - | Fireball | $126,156 | - | 61 | - | $2,068 | $126,156 | 1 | Pranakorn Films | true | false |
| 5 | 3 | High School Musical 3: Senior Year | $33,017 | -53.6% | 22 | -3 | $1,500 | $131,712 | 2 | Walt Disney Pictures | false | false |
| 6 | - | Before Valentine | $21,825 | - | 52 | - | $419 | $21,825 | - | Five Star Entertainment | - | false |
| 7 | 5 | Yes Man | $14,356 | -60.4% | 28 | -12 | $512 | $460,021 | 4 | N/A | false | false |
| 8 | 4 | Faa sai jai cheun baan | $13,868 | -69.9% | 37 | -18 | $374 | $315,823 | 3 | N/A | false | false |
| 9 | 7 | Defiance | $11,216 | -40.1% | 18 | - | $623 | $113,434 | 3 | M Pictures | false | false |
| 10 | 6 | The Fatality | $4,992 | -79.4% | 28 | -22 | $178 | $181,358 | 3 | N/A | false | false |
| 11 | 9 | Happiness of Kati | $3,438 | -72.8% | 23 | -17 | $149 | $312,429 | 4 | Mongkol Film Company | false | false |
| 12 | 8 | Bedtime Stories | $3,419 | -79.4% | 15 | -23 | $227 | $898,837 | 5 | Walt Disney Pictures | false | false |
| 13 | 12 | Australia | $2,710 | -43.1% | 8 | -1 | $338 | $378,281 | 6 | 20th Century Fox International | false | false |
| 14 | 11 | Madagascar: Escape 2 Africa | $2,238 | -53.4% | 3 | -3 | $746 | $692,972 | 6 | United International Pictures | false | false |
| 15 | 13 | Happy-Go-Lucky | $1,691 | -8.9% | 1 | - | $1,691 | $16,437 | 5 | Mongkol Major | false | false |
| 16 | 14 | The Day the Earth Stood Still | $691 | -58.4% | 1 | - | $691 | $1,524,080 | 8 | 20th Century Fox International | false | false |
| 17 | 10 | Quarantine | $590 | -90% | 5 | -17 | $118 | $182,167 | 4 | N/A | false | false |
| 18 | 16 | Twilight | $502 | -52.9% | 1 | -1 | $502 | $1,705,835 | 10 | Mongkol Major | false | false |
| 19 | 17 | The Orphanage | $181 | -42.7% | 1 | - | $181 | $10,234 | 7 | J-Bics | false | false |
| 20 | 18 | Kitaro and the Millennium Curse | $90 | -63.7% | 1 | - | $90 | $1,066 | 3 | J-Bics | false | false |
| 21 | 15 | Transporter 3 | $87 | -92% | 2 | -3 | $43 | $790,898 | 7 | M Pictures | false | false |
