South Korean Box Office For May 2018
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Believer | $38,610,549 | 1,531 | $9,326,352 | 24.2% | 1,357 | May 22 | - | - |
| 2 | Deadpool 2 | $31,844,901 | 1,576 | $16,876,634 | 53% | 1,576 | May 16 | - | 20th Century Fox International |
| 3 | Champion | $8,769,580 | 839 | $3,583,528 | 40.9% | 839 | May 1 | - | - |
| 4 | Love+Sling | $5,823,505 | 957 | $2,983,296 | 51.2% | 957 | May 9 | - | - |
| 5 | Burning | $4,230,529 | 739 | $1,887,613 | 44.6% | 739 | May 17 | - | - |
| 6 | Peter Rabbit | $2,784,901 | 599 | $777,149 | 27.9% | 599 | May 16 | - | Sony Pictures Releasing |
| 7 | Truth or Dare | $2,462,857 | 379 | $908,124 | 36.9% | 379 | May 22 | - | Universal Pictures International (UPI) |
| 8 | Solo: A Star Wars Story | $1,822,472 | 569 | $1,113,652 | 61.1% | 569 | May 24 | - | Walt Disney Pictures |
| 9 | Early Man | $871,247 | 597 | $443,977 | 51% | 597 | May 3 | - | First Run |
| 10 | Take Me to the Moon | $779,487 | 155 | $274,348 | 35.2% | 155 | May 16 | - | - |
| 11 | The Incredible Story of the Giant Pear | $680,016 | 350 | $290,945 | 42.8% | 350 | May 3 | - | - |
| 12 | Back to Burgundy | $414,667 | 54 | $60,182 | 14.5% | 45 | May 3 | - | - |
| 13 | Tofu | $401,379 | 534 | $254,937 | 63.5% | 534 | May 3 | - | - |
| 14 | Deja Vu | $332,446 | 477 | $149,063 | 44.8% | 477 | May 30 | - | - |
| 15 | Please Stand By | $325,393 | 346 | $149,082 | 45.8% | 346 | May 30 | - | - |
| 16 | Ruby Sparks 2018 Re-release | $240,540 | 149 | $130,739 | 54.4% | 149 | May 10 | - | - |
| 17 | Wonderstruck | $213,039 | 111 | $76,233 | 35.8% | 111 | May 3 | - | CJ Entertainment |
| 18 | Love, Chunibyo & Other Delusions the Movie: Take on Me | $212,101 | 113 | $85,625 | 40.4% | 113 | May 10 | - | - |
| 19 | Detroit | $173,203 | 108 | $83,020 | 47.9% | 108 | May 31 | - | - |
| 20 | C'est la vie! | $156,745 | 144 | $51,280 | 32.7% | 144 | May 30 | - | - |
| 21 | Mazinger Z: INFINITY | $155,815 | 332 | $88,671 | 56.9% | 332 | May 17 | - | - |
| 22 | Hedgehogs 2017 Re-release | $125,328 | 317 | $85,404 | 68.1% | 317 | May 30 | - | - |
| 23 | Im-Eul Wi-Han Haeng-Jin-Gok | $121,729 | 160 | $35,706 | 29.3% | 160 | May 16 | - | - |
| 24 | The Cakemaker | $84,037 | 66 | $25,138 | 29.9% | 66 | May 24 | - | - |
| 25 | The Trip to Spain | $78,889 | 59 | $23,912 | 30.3% | 59 | May 17 | - | - |
| 26 | Like Crazy 2017 Re-release | $72,422 | 33 | - | - | - | May 30 | - | - |
| 27 | Ethel & Ernest 2018 Re-release | $67,842 | 40 | $20,501 | 30.2% | 40 | May 10 | - | - |
| 28 | Borg vs. McEnroe | $65,187 | 127 | $31,993 | 49.1% | 127 | May 10 | - | - |
| 29 | Like Crazy | $54,791 | 116 | $29,348 | 53.6% | 116 | May 30 | - | - |
| 30 | The Hinzpeter Story | $54,523 | 119 | $26,803 | 49.2% | 119 | May 17 | - | - |
| 31 | The Sea of Trees 2018 Re-release | $52,177 | 98 | $28,326 | 54.3% | 98 | May 10 | - | - |
| 32 | Home | $49,934 | 123 | $20,916 | 41.9% | 123 | May 30 | - | - |
| 33 | The Young Karl Marx | $40,686 | 24 | $9,511 | 23.4% | 24 | May 17 | - | - |
| 34 | Land of Sorrow | $36,373 | 50 | $7,646 | 21% | 50 | May 24 | - | - |
| 35 | Fairy Tail: Dragon Cry | $34,821 | 93 | $25,544 | 73.4% | 93 | May 31 | - | - |
| 36 | Exhibition on Screen: Michelangelo Love and Death | $24,812 | 19 | $9,304 | 37.5% | 19 | May 31 | - | - |
| 37 | Hotel Salvation | $24,125 | 12 | $6,792 | 28.2% | 12 | May 24 | - | - |
| 38 | Mrs. Hyde | $18,924 | 31 | $6,635 | 35.1% | 31 | May 31 | - | - |
| 39 | Jungle | $17,552 | 45 | $12,946 | 73.8% | 45 | May 31 | - | - |
| 40 | Her Husband & His Wife | $16,185 | 2 | - | - | - | May 31 | - | - |
| 41 | Shot Caller | $16,046 | 59 | $13,527 | 84.3% | 59 | May 4 | - | - |
| 42 | The Paris Opera | $10,665 | 21 | $4,947 | 46.4% | 21 | May 17 | - | - |
| 43 | And So It Goes 2018 Re-release | $4,784 | 18 | $4,269 | 89.2% | 18 | May 31 | - | - |
| 44 | Good Manners | $4,537 | 9 | $2,198 | 48.4% | 9 | May 3 | - | - |
| 45 | Female Fight Squad | $4,491 | 2 | - | - | - | May 2 | - | - |
This chart only reflects 98 percent of total screens in South Korea.
