| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Elephant Kingdom | $707,105 | - | 160 | - | $4,419 | $707,105 | 1 | N/A | true | false |
| 2 | - | Knowing | $601,366 | - | 119 | - | $5,053 | $601,366 | 1 | Mongkol Major | true | false |
| 3 | 1 | Meat Grinder | $66,866 | -64.6% | 50 | -25 | $1,337 | $334,608 | 2 | Pranakorn Films | false | false |
| 4 | 2 | Best of Times | $54,558 | -64.9% | 49 | -14 | $1,113 | $1,327,272 | 4 | GMM Tai Hub (GTH) | false | false |
| 5 | 3 | Dragonball Evolution | $19,893 | -84.5% | 59 | -26 | $337 | $877,458 | 3 | 20th Century Fox International | false | false |
| 6 | 4 | Anueng Kidthung Penyangying | $18,356 | -76.5% | 46 | -9 | $399 | $376,870 | 3 | Five Star Entertainment | false | false |
| 7 | 6 | Make It Happen | $14,638 | -65.7% | 13 | -4 | $1,126 | $76,670 | 2 | M Pictures | false | false |
| 8 | 8 | New in Town | $13,593 | -57% | 17 | +2 | $799 | $55,963 | 2 | N/A | false | false |
| 9 | 7 | Seven Pounds | $12,193 | -62% | 10 | -3 | $1,219 | $58,704 | 2 | Sony Pictures Releasing | false | false |
| 10 | 5 | Watchmen | $8,214 | -86.9% | 26 | -44 | $315 | $726,758 | 4 | United International Pictures | false | false |
| 11 | - | 20th Century Boys 2: The Last Hope | $6,170 | - | 3 | - | $2,056 | $6,170 | 1 | M Pictures | true | false |
| 12 | 10 | Slumdog Millionaire | $4,695 | -50.1% | 1 | - | $4,695 | $70,309 | 4 | N/A | false | false |
| 13 | - | The Great Buck Howard | $3,766 | - | 1 | - | $3,766 | $3,766 | 1 | Mongkol Major | true | false |
| 14 | 9 | Bolt | $2,855 | -90.5% | 14 | -23 | $203 | $350,751 | 4 | Walt Disney Pictures | false | false |
| 15 | 11 | The Pink Panther 2 | $2,746 | -48.5% | 1 | - | $2,746 | $34,140 | 5 | Sony Pictures Releasing | false | false |
| 16 | 18 | Milk | $1,314 | -40.6% | 2 | -2 | $657 | $46,095 | 5 | M Pictures | false | false |
| 17 | 16 | The Reader | $1,221 | -57.9% | 2 | -2 | $610 | $81,534 | 7 | M Pictures | false | false |
| 18 | 14 | Confessions of a Shopaholic | $576 | -86.9% | 1 | -6 | $576 | $408,168 | 7 | Walt Disney Pictures | false | false |
| 19 | 12 | The Curious Case of Benjamin Button | $485 | -90.1% | 3 | -10 | $161 | $534,800 | 7 | Warner Bros. | false | false |
| 20 | 13 | Street Fighter: The Legend of Chun-Li | $320 | -93% | 4 | -20 | $80 | $330,565 | 5 | M Pictures | false | false |
| 21 | 20 | Doubt | $284 | -64.9% | 1 | - | $284 | $12,666 | 6 | Walt Disney Pictures | false | false |
| 22 | 22 | The Wrestler | $245 | -51.8% | 2 | +1 | $122 | $20,729 | 6 | M Pictures | false | false |
| 23 | 19 | Sathu | $194 | -89.6% | 1 | -9 | $194 | $545,597 | 6 | Mongkol Film Company | false | false |
| 24 | 15 | Outlander | $174 | -95.8% | 3 | -12 | $58 | $288,267 | 5 | Mongkol Major | false | false |
| 25 | 17 | Power Kids | $89 | -96.3% | 2 | -23 | $44 | $97,836 | 4 | Mongkol Film Company | false | false |
