| Rank | Release
| Genre
| Budget
| Running Time
| Gross | Theaters | Total Gross | Release Date | Distributor
| Estimated
|
|---|
| 1 | Terminator Salvation | - | - | - | $15,374,881 | 793 | $23,353,191 | May 21 | Lotte Entertainment | false |
| 2 | My Girlfriend Is an Agent | - | - | - | $14,374,372 | 555 | $20,452,287 | Apr 22 | Lotte Entertainment | false |
| 3 | Thirst | - | - | - | $10,695,434 | 633 | $11,950,322 | Apr 30 | CJ Entertainment | false |
| 4 | Angels & Demons | - | - | - | $8,123,444 | 618 | $9,887,278 | May 14 | Sony Pictures Releasing | false |
| 5 | X-Men Origins: Wolverine | - | - | - | $6,099,188 | 573 | $6,631,942 | Apr 29 | 20th Century Fox International | false |
| 6 | Insadong Scandal | - | - | - | $5,593,574 | 408 | $6,177,474 | Apr 29 | SK Telecom | false |
| 7 | Star Trek | - | - | - | $5,405,628 | 502 | $5,686,001 | May 7 | United International Pictures | false |
| 8 | Mother | - | - | - | $5,334,959 | 764 | $16,283,879 | May 28 | CJ Entertainment | false |
| 9 | Castaway on the Moon | - | - | - | $3,474,184 | 350 | $3,718,480 | May 14 | Cinema Service | false |
| 10 | Monsters vs. Aliens | - | - | - | $2,257,707 | 370 | $3,526,735 | Apr 23 | CJ Entertainment | false |
| 11 | Knowing | - | - | - | $1,004,337 | 432 | $5,502,635 | Apr 16 | Next Entertainment World (NEW) | false |
| 12 | Yakuza: Like a Dragon 2009 Re-release | - | - | - | $989,153 | 195 | $1,120,857 | Apr 30 | - | false |
| 13 | Coraline | - | - | - | $855,814 | 286 | $1,149,300 | May 21 | United International Pictures | false |
| 14 | Private Eye | - | - | - | $739,986 | 441 | $10,096,836 | Apr 2 | CJ Entertainment | false |
| 15 | Old Partner | - | - | - | $730,666 | 308 | $15,287,483 | Jan 15 | Indiestory Incorporation | false |
| 16 | State of Play | - | - | - | $705,041 | 254 | $784,644 | Apr 30 | Universal Pictures International (UPI) | false |
| 17 | Mèche Blanche, les aventures du petit castor | - | - | - | $559,640 | 220 | $562,159 | Apr 30 | - | false |
| 18 | District 13: Ultimatum | - | - | - | $212,366 | 289 | $2,650,165 | Apr 16 | KD Media | false |
| 19 | Slumdog Millionaire | - | - | - | $207,093 | 244 | $6,193,387 | Mar 19 | CJ Entertainment | false |
| 20 | Breathless | - | - | - | $204,760 | 84 | $668,323 | Apr 16 | - | false |
| 21 | Like You Know It All | - | - | - | $158,969 | 36 | $208,867 | May 1 | - | false |
| 22 | Calling | - | - | - | $149,812 | 28 | $503,804 | Apr 2 | - | false |
| 23 | Fast & Furious | - | - | - | $143,279 | 334 | $3,616,904 | Apr 2 | United International Pictures | false |
| 24 | Ong Bak 2 | - | - | - | $137,935 | 230 | $154,275 | May 14 | KD Media | false |
| 25 | The Echo | - | - | - | $127,750 | 174 | $225,751 | May 28 | - | false |
| 26 | The Reader | - | - | - | $99,975 | 285 | $2,321,258 | Mar 26 | SK Telecom | false |
| 27 | Halloween | - | - | - | $97,193 | 79 | $114,691 | May 14 | - | false |
| 28 | Cyborg She | - | - | - | $90,295 | 135 | $106,124 | May 14 | Next Entertainment World (NEW) | false |
| 29 | Chocolate Underground | - | - | - | $85,691 | 46 | $85,691 | May 1 | - | false |
| 30 | Sisters on the Road | - | - | - | $67,611 | 20 | $116,200 | Apr 23 | Walt Disney Pictures | false |
| 31 | Son of Rambow | - | - | - | $53,483 | 85 | $61,782 | Apr 16 | - | false |
| 32 | Boat | - | - | - | $47,245 | 58 | $69,314 | May 28 | Showbox Entertainment | false |
| 33 | Missing | - | - | - | $41,180 | 321 | $3,441,159 | Mar 19 | Synergy | false |
| 34 | Paris | - | - | - | $38,047 | 17 | $42,066 | May 7 | - | false |
| 35 | Admiral | - | - | - | $36,142 | 94 | $234,039 | Apr 23 | - | false |
| 36 | Gran Torino | - | - | - | $29,392 | 133 | $720,438 | Mar 19 | Warner Bros. | false |
| 37 | Vicky Cristina Barcelona | - | - | - | $28,948 | 163 | $357,372 | Apr 16 | Prime Entertainment | false |
| 38 | Detroit Metal City | - | - | - | $25,831 | 12 | $40,411 | May 21 | - | false |
| 39 | Suspect X | - | - | - | $21,044 | 184 | $497,358 | Apr 9 | Next Entertainment World (NEW) | false |
| 40 | Night at the Museum: Battle of the Smithsonian | - | - | - | $12,970 | 669 | $9,819,667 | Jun 4 | 20th Century Fox International | false |
| 41 | Antonia's Line | - | - | - | $12,583 | 4 | $21,046 | Jan 11 | - | false |
| 42 | Around Space: Journey Through the Universe with the Hubble Space Telescope | - | - | - | $12,422 | 3 | $151,060 | Jul 3 | - | false |
| 43 | Cherry Blossoms | - | - | - | $12,377 | 12 | $158,124 | Oct 22 | - | false |
| 44 | Boy A | - | - | - | $11,394 | 1 | $23,923 | May 1 | - | false |
| 45 | Thomas & Friends: The Great Discovery - The Movie | - | - | - | $9,985 | 84 | $188,317 | Apr 9 | - | false |
| 46 | Before the Devil Knows You're Dead | - | - | - | $9,432 | 2 | $31,706 | May 14 | - | false |
| 47 | Master of the Epic: David Lean Retrospective | - | - | - | $7,214 | 1 | $8,115 | Apr 28 | - | false |
| 48 | One Step More to the Sea | - | - | - | $6,450 | 6 | $12,704 | May 21 | - | false |
| 49 | Black Ice 2008 Re-release | - | - | - | $5,901 | 3 | $19,539 | Apr 23 | - | false |
| 50 | Hong Sang Soo Film Festival: A Tale of the Cinema Film Festival | - | - | - | $5,373 | 1 | $5,695 | May 14 | - | false |
| 51 | Modern French Comedies | - | - | - | $4,601 | 1 | $5,567 | May 19 | - | false |
| 52 | Where Is the Friend's House? | - | - | - | $3,940 | 1 | $4,546 | May 5 | - | false |
| 53 | Wild Exploration Alive | - | - | - | $3,293 | 2 | $39,287 | May 14 | - | false |
| 54 | Tokyo Sonata | - | - | - | $3,241 | 3 | $26,090 | Mar 19 | - | false |
| 55 | Summer Hours | - | - | - | $2,511 | 7 | $25,951 | Mar 26 | - | false |
| 56 | Visitor Q 2009 Re-release | - | - | - | $2,468 | 1 | $3,281 | May 28 | - | false |
| 57 | Indie Forum 2009 | - | - | - | $1,652 | 3 | $3,226 | May 28 | - | false |
| 58 | Ip Man | - | - | - | $1,514 | 208 | $548,647 | Apr 16 | CJ Entertainment | false |
| 59 | Pororo the Little Penguin | - | - | - | $1,204 | 1 | $1,204 | May 1 | - | false |
| 60 | The Little Penguin Pororo Special Exhibition 2 | - | - | - | $1,139 | 1 | $1,139 | May 1 | - | false |
| 61 | Silver Film Exhibition: Her Youth | - | - | - | $889 | 1 | $951 | May 14 | - | false |
| 62 | Cloud 9 | - | - | - | $874 | 1 | $5,363 | May 28 | - | false |
| 63 | Land of Scarecrows | - | - | - | $823 | 4 | $880 | Apr 30 | - | false |
| 64 | The Little Penguin Pororo Special Exhibition 3 | - | - | - | $702 | 1 | $847 | May 12 | - | false |
| 65 | The Day After | - | - | - | $627 | 1 | $2,468 | Mar 12 | - | false |
| 66 | Mianhada Dokdoya | - | - | - | $579 | 68 | $24,024 | Dec 31 | - | false |
| 67 | Let the Right One In | - | - | - | $546 | 114 | $501,900 | Nov 13 | - | false |
| 68 | The Story of Mr. Sorry | - | - | - | $517 | 1 | $985 | Mar 12 | - | false |
| 69 | No Country for Old Men | - | - | - | $498 | 27 | $570,944 | Feb 21 | CJ Entertainment | false |
| 70 | Way | - | - | - | $414 | 3 | $439 | May 14 | - | false |
| 71 | Two Days in Paris | - | - | - | $401 | 10 | $433 | Jul 19 | - | false |
| 72 | Burn After Reading | - | - | - | $380 | 61 | $213,154 | Mar 26 | United International Pictures | false |
| 73 | Why Did You Come to My House? | - | - | - | $379 | 284 | $1,127,017 | Apr 9 | - | false |
| 74 | A History of Violence | - | - | - | $376 | 4 | $15,900 | Jul 26 | - | false |
| 75 | Forever Enthralled | - | - | - | $284 | 215 | $211,555 | Apr 9 | SK Telecom | false |
| 76 | Daytime Drinking | - | - | - | $217 | 15 | $140,617 | Feb 5 | - | false |
| 77 | Scandal Makers | - | - | - | $210 | 524 | $41,281,917 | Dec 4 | Lotte Entertainment | false |
| 78 | Rediscovering Film History | - | - | - | $192 | 1 | $192 | May 1 | - | false |
| 79 | I Want to Live as a Fisherman | - | - | - | $164 | 6 | $2,783 | Apr 16 | - | false |
