| Rank | LW | Release
| Gross | %± LW | Theaters | Change | Average | Total Gross | Weeks | Distributor
| New This Week
| Estimated
|
|---|
| 1 | - | Valentine Sweety | $905,849 | - | 132 | - | $6,862 | $965,237 | 1 | N/A | true | false |
| 2 | 2 | Journey 2: The Mysterious Island | $231,354 | -62% | 85 | -9 | $2,721 | $1,031,627 | 2 | Warner Bros. | false | false |
| 3 | 1 | ATM: Er Rak Error | $187,099 | -70.4% | 64 | -36 | $2,923 | $4,780,334 | 4 | GMM Tai Hub (GTH) | false | false |
| 4 | - | Safe House | $142,108 | - | 37 | - | $3,840 | $142,108 | 1 | United International Pictures | true | false |
| 5 | - | Star Wars: Episode I - The Phantom Menace 2012 3D Release | $84,294 | - | 39 | - | $2,161 | $84,294 | 1 | 20th Century Fox International | true | false |
| 6 | - | The Woman in Black | $70,942 | - | 25 | - | $2,837 | $70,942 | 1 | Mongkol Major | true | false |
| 7 | 4 | Man on a Ledge | $52,166 | -64.2% | 57 | - | $915 | $258,734 | 2 | Mongkol Major | false | false |
| 8 | 7 | The Lady | $35,222 | -29.5% | 27 | - | $1,304 | $112,705 | 2 | M Pictures | false | false |
| 9 | 3 | Panya Raenu 2 | $19,675 | -86.5% | 27 | -31 | $728 | $631,239 | 3 | Mongkol Film Company | false | false |
| 10 | 5 | Underworld: Awakening | $19,508 | -82.4% | 15 | -36 | $1,300 | $1,824,382 | 4 | Sony Pictures Releasing | false | false |
| 11 | - | The Iron Lady | $19,107 | - | 6 | - | $3,184 | $19,107 | 1 | M Pictures | true | false |
| 12 | 8 | War Horse | $18,896 | -55% | 26 | -6 | $726 | $79,248 | 2 | Walt Disney Pictures | false | false |
| 13 | - | W.E. | $6,815 | - | 3 | - | $2,271 | $6,815 | 1 | Mongkol Major | true | false |
| 14 | 11 | Moneyball | $4,893 | -56.1% | 2 | - | $2,446 | $42,405 | 3 | Sony Pictures Releasing | false | false |
| 15 | 6 | First Kiss | $3,207 | -95.7% | 14 | -46 | $229 | $325,945 | 3 | Five Star Entertainment | false | false |
| 16 | 12 | The Girl with the Dragon Tattoo | $888 | -67.4% | 2 | - | $444 | $249,481 | 6 | Sony Pictures Releasing | false | false |
| 17 | 17 | We Need to Talk About Kevin | $832 | -21.9% | 2 | +1 | $416 | $11,934 | 4 | M Pictures | false | false |
| 18 | 13 | Tinker Tailor Soldier Spy | $814 | -54.3% | 4 | +2 | $203 | $30,698 | 6 | N/A | false | false |
| 19 | 20 | Midnight in Paris | $700 | -10.7% | 1 | - | $700 | $44,579 | 8 | M Pictures | false | false |
| 20 | 16 | My Week with Marilyn | $585 | -48.2% | 2 | -1 | $292 | $32,260 | 5 | M Pictures | false | false |
| 21 | 10 | An Ordinary Love Story | $447 | -96.2% | 7 | -26 | $63 | $16,811 | 2 | N/A | false | false |
| 22 | 18 | Bangkok Sweety | $311 | -70.3% | 1 | -3 | $311 | $2,788,735 | 7 | N/A | false | false |
| 23 | 14 | Rak Leaw Feaw | $217 | -86.8% | 8 | -16 | $27 | $2,570 | 2 | N/A | false | false |
| 24 | 9 | The Devil Inside | $189 | -99.3% | 1 | -26 | $189 | $150,978 | 3 | United International Pictures | false | false |
| 25 | 23 | Warrior | $139 | -64.1% | 1 | - | $139 | $5,771 | 5 | N/A | false | false |
| 26 | 22 | Legend of Kung Fu Rabbit | $119 | -71.3% | 1 | - | $119 | $654 | 2 | Mongkol Major | false | false |
