| Rank | Release
| Genre
| Budget
| Running Time
| Gross | Theaters | Total Gross | Release Date | Distributor
| Estimated
|
|---|
| 1 | Detective Conan: Zero the Enforcer | - | - | - | $30,673,879 | - | $80,403,452 | Apr 13 | Toho | false |
| 2 | Avengers: Infinity War | - | - | - | $23,748,190 | - | $33,881,648 | Apr 27 | Walt Disney Pictures | false |
| 3 | Ready Player One | - | - | - | $11,219,199 | - | $23,400,000 | Apr 20 | Warner Bros. | false |
| 4 | Laplace's Witch | - | - | - | $8,932,739 | - | $10,919,843 | May 4 | Toho | false |
| 5 | Crayon Shin-chan: Burst Serving! Kung Fu Boys - Ramen Rebellion | - | - | - | $6,664,194 | - | $14,742,463 | Apr 13 | Toho | false |
| 6 | Peter Rabbit | - | - | - | $5,939,104 | 463 | $10,171,634 | May 18 | Sony Pictures Releasing | false |
| 7 | Coco | - | - | - | $4,852,269 | - | $46,338,613 | Mar 16 | Walt Disney Pictures | false |
| 8 | The Blood of Wolves | - | - | - | $3,823,511 | - | $5,908,700 | Aug 20 | Toei Company | false |
| 9 | What a Wonderful Family! 3: My Wife, My Life | - | - | - | $3,473,286 | - | $6,438,585 | May 25 | Shochiku | false |
| 10 | After the Rain | - | - | - | $2,396,663 | - | $5,304,179 | May 25 | Toho | false |
| 11 | Inuyashiki | - | - | - | $2,355,466 | - | $5,550,650 | Apr 20 | Toho | false |
| 12 | The Boss Baby | - | - | - | $2,067,555 | - | $30,741,043 | Mar 21 | Toho-Towa | false |
| 13 | Mobile Suit Gundam: The Origin VI - Rise of the Red Comet | - | - | - | $2,053,231 | - | $2,053,231 | May 5 | Shochiku | false |
| 14 | Saraba seishun, saredo seishun | - | - | - | $1,966,475 | - | $3,762,474 | May 12 | Nikkatsu | false |
| 15 | 12 Strong | - | - | - | $1,955,832 | 194 | $1,958,583 | May 4 | Gaga | false |
| 16 | Jumanji: Welcome to the Jungle | - | - | - | $1,577,657 | 417 | $11,474,471 | Apr 6 | Sony Pictures Releasing | false |
| 17 | My Friend 'A' | - | - | - | $1,559,025 | - | $2,264,811 | May 25 | Gaga | false |
| 18 | My Little Monster | - | - | - | $1,365,883 | - | $3,962,689 | Apr 27 | Toho | false |
| 19 | The Greatest Showman | - | - | - | $1,133,721 | 461 | $48,277,658 | Feb 16 | 20th Century Fox International | false |
| 20 | Pacific Rim: Uprising | - | - | - | $1,080,585 | - | $8,304,753 | Apr 13 | Universal Pictures International (UPI) | false |
| 21 | Rampage | - | - | - | $648,637 | - | $4,500,000 | May 18 | Warner Bros. | false |
| 22 | Code Geass: Lelouch of the Re;Surrection 2018 Re-release | - | - | - | $620,280 | - | $620,280 | May 26 | Showgate | false |
| 23 | Flea-picking Samurai | - | - | - | $593,482 | - | $3,524,012 | May 18 | Toho | false |
| 24 | Darkest Hour | - | - | - | $556,549 | 2 | $2,990,881 | Mar 30 | Universal Pictures International (UPI) | false |
| 25 | Phantom Thread | - | - | - | $195,686 | 4 | $801,954 | May 26 | Universal Pictures International (UPI) | false |
| 26 | Stronger | - | - | - | $141,727 | 40 | $160,509 | May 11 | Pony Canyon | false |
| 27 | Black Panther | - | - | - | $56,421 | - | $14,655,352 | Mar 1 | Walt Disney Pictures | false |
| 28 | The Big Sick | - | - | - | $25,298 | 20 | $184,384 | Feb 23 | Gaga | false |
