South Korean Box Office For January 2018
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Coco | $26,000,000 | 1,177 | $5,759,632 | 22.2% | 1,177 | Jan 11 | - | - |
| 2 | Keys to the Heart | $25,295,133 | 956 | $5,070,504 | 20% | 861 | Jan 17 | - | - |
| 3 | Maze Runner: The Death Cure | $17,614,456 | 19,624 | $9,862,371 | 56% | 1,090 | Jan 17 | - | 20th Century Fox International |
| 4 | Jumanji: Welcome to the Jungle | $12,992,117 | 791 | $5,204,158 | 40.1% | 791 | Jan 3 | - | Sony Pictures Releasing |
| 5 | Psychokinesis | $6,981,970 | 1,051 | $3,622,800 | 51.9% | 1,051 | Jan 31 | - | - |
| 6 | Insidious: The Last Key | $4,001,163 | 769 | $2,009,976 | 50.2% | 769 | Jan 31 | - | Sony Pictures Releasing |
| 7 | Ferdinand | $3,603,437 | 698 | $1,766,882 | 49% | 698 | Jan 3 | - | 20th Century Fox International |
| 8 | The Commuter | $2,138,061 | 575 | $1,187,996 | 55.6% | 575 | Jan 25 | - | - |
| 9 | 12 Strong | $1,718,839 | 183 | $997,625 | 58% | 183 | Jan 31 | - | Joyncontents Group |
| 10 | The Discloser | $1,597,848 | 512 | $854,005 | 53.4% | 512 | Jan 24 | - | - |
| 11 | Downsizing | $1,166,489 | 511 | $985,214 | 84.5% | 511 | Jan 11 | - | Paramount Pictures International |
| 12 | The Little Vampire 3D | $1,120,580 | 213 | $89,903 | 8% | 213 | Jan 18 | - | - |
| 13 | SechsKies Eighteen | $339,931 | 25 | $85,629 | 25.2% | 25 | Jan 18 | - | - |
| 14 | Bibapbarurra | $286,327 | 325 | $116,456 | 40.7% | 325 | Jan 24 | - | - |
| 15 | Darkest Hour | $261,919 | 195 | $71,015 | 27.1% | 195 | Jan 17 | - | Universal Pictures International (UPI) |
| 16 | Haikyu!!: The Battle of Concepts | $169,519 | 97 | $31,472 | 18.6% | 97 | Jan 11 | - | - |
| 17 | Wonder Wheel | $163,194 | 140 | $67,097 | 41.1% | 140 | Jan 25 | - | Green Narae Media |
| 18 | Monkey King Reloaded | $162,751 | 194 | $90,038 | 55.3% | 194 | Jan 25 | - | - |
| 19 | Fireworks | $160,765 | 363 | $101,793 | 63.3% | 363 | Jan 11 | - | - |
| 20 | Myeoneuri: My Son's Crazy Wife | $134,424 | 56 | $9,508 | 7.1% | 56 | Jan 17 | - | - |
| 21 | Is the Order a Rabbit?? ~ Dear My Sister ~ | $116,667 | 84 | $35,712 | 30.6% | 84 | Jan 18 | - | - |
| 22 | Gong-dong-jeong-beom | $73,686 | 71 | $10,094 | 13.7% | 71 | Jan 25 | - | - |
| 23 | The Man Who Invented Christmas | $51,765 | 103 | $26,576 | 51.3% | 103 | Jan 11 | - | - |
| 24 | Lu Over the Wall | $51,396 | 99 | $26,492 | 51.5% | 99 | Jan 31 | - | - |
| 25 | Brothers in Heaven | $43,067 | 82 | $14,639 | 34% | 82 | Jan 17 | - | - |
| 26 | For Vagina's Sake | $42,031 | 34 | $9,100 | 21.7% | 34 | Jan 18 | - | - |
| 27 | Porto | $40,160 | 1 | - | - | - | Jan 31 | - | - |
| 28 | The Liar and His Lover 2018 Re-release | $26,171 | 90 | $12,872 | 49.2% | 90 | Jan 24 | - | - |
| 29 | Leatherface | $25,677 | 27 | $17,440 | 67.9% | 27 | Jan 25 | - | - |
| 30 | Good Time | $20,972 | 15 | $6,645 | 31.7% | 15 | Jan 4 | - | - |
| 31 | Manhunt | $20,166 | 49 | $8,307 | 41.2% | 49 | Jan 25 | - | - |
| 32 | A Beautiful Star | $18,441 | 29 | $5,263 | 28.5% | 29 | Jan 18 | - | - |
| 33 | Tangerine 2018 Re-release | $14,006 | 16 | $5,108 | 36.5% | 16 | Jan 25 | - | - |
| 34 | 6 Below: Miracle on the Mountain | $13,658 | 20 | $5,565 | 40.7% | 20 | Jan 25 | - | - |
| 35 | Bittersweet Brew | $11,073 | 28 | $3,362 | 30.4% | 28 | Jan 11 | - | - |
| 36 | High Strung 2018 Re-release | $9,274 | 67 | $4,703 | 50.7% | 67 | Jan 4 | - | - |
| 37 | The Curious World of Hieronymus Bosch | $9,269 | 21 | $5,559 | 60% | 21 | Jan 18 | - | - |
| 38 | Ao Oni: The Animation | $3,200 | 34 | $1,771 | 55.3% | 34 | Jan 4 | - | - |
This chart only reflects 98 percent of total screens in South Korea.
