| Rank | Release
| Genre
| Budget
| Running Time
| Gross | Theaters | Total Gross | Release Date | Distributor
| Estimated
|
|---|
| 1 | X-Men Origins: Wolverine | - | - | - | $1,942,092 | 178 | $2,345,940 | Apr 29 | 20th Century Fox International | false |
| 2 | Terminator Salvation | - | - | - | $1,483,467 | 106 | $2,878,708 | May 28 | Sony Pictures Releasing | false |
| 3 | Angels & Demons | - | - | - | $1,342,152 | 70 | $1,458,792 | May 14 | Sony Pictures Releasing | false |
| 4 | Night at the Museum: Battle of the Smithsonian | - | - | - | $1,090,236 | 160 | $1,677,754 | May 21 | 20th Century Fox International | false |
| 5 | Star Trek | - | - | - | $813,534 | 110 | $837,278 | May 8 | United International Pictures | false |
| 6 | Primary Love | - | - | - | $561,983 | 69 | $561,983 | Apr 30 | RS Film & Distribution | false |
| 7 | Saranae Hao Peng | - | - | - | $375,987 | 75 | $2,648,133 | Apr 30 | Mongkol Film Company | false |
| 8 | The Haunting in Connecticut | - | - | - | $133,584 | 54 | $412,693 | Apr 23 | Mongkol Major | false |
| 9 | Horsemen | - | - | - | $96,919 | 36 | $96,919 | May 7 | Mongkol Major | false |
| 10 | Fast & Furious | - | - | - | $75,426 | 157 | $2,674,203 | Apr 2 | United International Pictures | false |
| 11 | Elephant Kingdom | - | - | - | $73,432 | 160 | $2,215,815 | Mar 26 | - | false |
| 12 | Deathwave | - | - | - | $68,373 | 48 | $120,283 | May 28 | - | false |
| 13 | Monsters vs. Aliens | - | - | - | $66,092 | 54 | $551,776 | Apr 9 | United International Pictures | false |
| 14 | Krasue fad pob | - | - | - | $41,965 | 50 | $44,540 | May 21 | - | false |
| 15 | Rahtree Reborn | - | - | - | $36,100 | 93 | $1,039,707 | Apr 9 | Mongkol Film Company | false |
| 16 | Crank: High Voltage | - | - | - | $31,252 | 73 | $467,826 | Apr 16 | M Pictures | false |
| 17 | The Code | - | - | - | $30,206 | 4 | $40,763 | May 7 | - | false |
| 18 | Race to Witch Mountain | - | - | - | $26,819 | 55 | $795,335 | Apr 9 | Walt Disney Pictures | false |
| 19 | A Frozen Flower | - | - | - | $21,108 | 4 | $64,685 | Apr 16 | Mongkol Major | false |
| 20 | The International | - | - | - | $20,080 | 2 | $56,637 | Apr 16 | Sony Pictures Releasing | false |
| 21 | Heartbreak Library | - | - | - | $14,351 | 15 | $14,351 | May 7 | - | false |
| 22 | Rule Number One | - | - | - | $12,395 | 15 | $12,395 | May 21 | Mongkol Major | false |
| 23 | Righteous Kill | - | - | - | $9,674 | 2 | $14,374 | May 21 | - | false |
| 24 | Big Stan | - | - | - | $8,503 | 1 | $8,503 | May 7 | M Pictures | false |
| 25 | Winged Creatures | - | - | - | $7,773 | 1 | $9,293 | May 14 | - | false |
| 26 | Slumdog Millionaire | - | - | - | $6,257 | 1 | $92,868 | Mar 5 | - | false |
| 27 | K-20: The Fiend with Twenty Faces | - | - | - | $3,430 | 1 | $3,430 | Apr 30 | M Pictures | false |
| 28 | The Pink Panther 2 | - | - | - | $3,308 | 1 | $47,907 | Feb 26 | Sony Pictures Releasing | false |
| 29 | Last Chance Harvey | - | - | - | $3,137 | 2 | $20,692 | Apr 9 | M Pictures | false |
| 30 | What Just Happened | - | - | - | $2,494 | 1 | $4,895 | Apr 23 | - | false |
| 31 | The Great Buck Howard | - | - | - | $2,187 | 1 | $18,350 | Mar 26 | Mongkol Major | false |
| 32 | My Mighty Princess | - | - | - | $2,089 | 2 | $3,198 | May 28 | M Pictures | false |
| 33 | Knowing | - | - | - | $1,586 | 119 | $1,282,929 | Mar 26 | Mongkol Major | false |
| 34 | Antique | - | - | - | $840 | 16 | $34,692 | Apr 16 | - | false |
| 35 | Forever Enthralled | - | - | - | $748 | 1 | $5,307 | Apr 16 | Mongkol Major | false |
| 36 | Sassy Player | - | - | - | $226 | 60 | $568,108 | Apr 2 | Pranakorn Films | false |
| 37 | Shinjuku Incident | - | - | - | $30 | 60 | $312,302 | Apr 2 | Mongkol Major | false |
