South Korean Box Office For April 2018
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Avengers: Infinity War | $81,741,715 | 2,553 | $39,173,384 | 47.9% | 2,553 | Apr 25 | - | Walt Disney Pictures |
| 2 | Rampage | $11,200,000 | 909 | $5,029,485 | 44.9% | 909 | Apr 12 | - | Warner Bros. |
| 3 | What a Man Wants | $9,080,272 | 985 | $3,895,991 | 42.9% | 985 | Apr 5 | - | - |
| 4 | A Quiet Place | $4,280,080 | 677 | $2,174,953 | 50.8% | 677 | Apr 12 | - | Paramount Pictures International |
| 5 | Intention | $4,107,019 | 643 | $1,179,911 | 28.7% | 569 | Apr 12 | - | - |
| 6 | Stand by Me | $2,127,887 | 544 | $794,848 | 37.4% | 544 | Apr 5 | - | - |
| 7 | Marionette | $1,124,500 | 545 | $745,221 | 66.3% | 545 | Apr 19 | - | - |
| 8 | Dangal | $826,567 | 252 | $99,744 | 12.1% | 252 | Apr 25 | - | - |
| 9 | Lady Bird | $774,646 | 264 | $271,593 | 35.1% | 264 | Apr 4 | - | Universal Pictures International (UPI) |
| 10 | Leo Da Vinci: Mission Mona Lisa | $467,552 | 207 | $124,891 | 26.7% | 150 | Apr 26 | - | - |
| 11 | Lightning Man and the Mystery Island | $453,672 | 191 | $248,590 | 54.8% | 191 | Apr 5 | - | - |
| 12 | Snatch Up | $378,719 | 463 | $213,217 | 56.3% | 463 | Apr 12 | - | - |
| 13 | True Fiction | $360,988 | 429 | $182,359 | 50.5% | 429 | Apr 25 | - | - |
| 14 | The Jungle Bunch | $272,325 | 331 | $211,753 | 77.8% | 331 | Apr 19 | - | - |
| 15 | Spark: A Space Tail | $235,668 | 310 | $173,666 | 73.7% | 310 | Apr 12 | - | - |
| 16 | Den of Thieves | $219,256 | 348 | $132,335 | 60.4% | 348 | Apr 19 | - | Noori Pictures |
| 17 | Bungo Stray Dogs: Dead Apple | $206,854 | 79 | $68,282 | 33% | 79 | Apr 5 | - | - |
| 18 | Hostiles | $204,089 | 276 | $112,673 | 55.2% | 276 | Apr 19 | - | - |
| 19 | Breathe | $189,595 | 146 | $90,924 | 48% | 146 | Apr 12 | - | - |
| 20 | Mothers | $178,748 | 364 | $86,196 | 48.2% | 364 | Apr 19 | - | - |
| 21 | The Gateless Gate | $147,650 | 42 | $29,501 | 20% | 42 | Apr 19 | - | - |
| 22 | My Love Story!! 2018 Re-release | $130,031 | 143 | $57,881 | 44.5% | 143 | Apr 12 | - | - |
| 23 | Free! Take your Marks | $124,054 | 11 | - | - | - | Apr 12 | - | - |
| 24 | Dyrene i Hakkebakkeskogen | $108,058 | 207 | $55,861 | 51.7% | 207 | Apr 25 | - | - |
| 25 | Claire's Camera | $64,879 | 67 | $19,937 | 30.7% | 67 | Apr 25 | - | - |
| 26 | Columbus | $55,475 | 55 | $20,509 | 37% | 55 | Apr 19 | - | - |
| 27 | Bob the Builder: Mega Machines | $50,798 | 90 | $23,482 | 46.2% | 90 | Apr 19 | - | - |
| 28 | A Fantastic Woman | $46,287 | 43 | $13,879 | 30% | 43 | Apr 19 | - | - |
| 29 | Let the Sunshine In | $44,627 | 25 | $9,405 | 21.1% | 25 | Apr 26 | - | - |
| 30 | See You Up There | $44,191 | 56 | $17,503 | 39.6% | 56 | Apr 12 | - | - |
| 31 | A Tiger in Winter | $42,019 | 134 | $22,234 | 52.9% | 134 | Apr 12 | - | - |
| 32 | Mukoku | $36,243 | 3 | - | - | - | Apr 19 | - | - |
| 33 | Daytime Shooting Star 2018 Re-release | $34,553 | 108 | $23,030 | 66.7% | 108 | Apr 19 | - | - |
| 34 | Bleeding Steel | $26,822 | 116 | $20,343 | 75.8% | 116 | Apr 19 | - | - |
| 35 | Duck Town | $21,052 | 36 | $6,454 | 30.7% | 36 | Apr 19 | - | - |
| 36 | Samson | $13,252 | 3 | - | - | - | Apr 19 | - | - |
| 37 | Colors of Wind | $10,925 | 46 | $5,163 | 47.3% | 46 | Apr 5 | - | - |
| 38 | One More Time 2018 Re-release | $8,317 | 20 | $4,717 | 56.7% | 20 | Apr 26 | - | - |
| 39 | Free! Timeless Medley: The Promise | $8,122 | 7 | $4,957 | 61% | 7 | Apr 12 | - | - |
| 40 | Free! Timeless Medley: The Bond | $7,700 | 7 | $4,803 | 62.4% | 7 | Apr 12 | - | - |
| 41 | The Spearhead Effect | $7,042 | 2 | - | - | - | Apr 13 | - | - |
| 42 | Slack Bay | $6,975 | 12 | $2,547 | 36.5% | 12 | Apr 5 | - | - |
| 43 | Clowntergeist | $6,537 | 2 | - | - | - | Apr 18 | - | - |
| 44 | My Teacher | $2,977 | 4 | $2,977 | 100% | 4 | Apr 6 | - | - |
This chart only reflects 98 percent of total screens in South Korea.
