| Rank | Release
| Genre
| Budget
| Running Time
| Gross | Theaters | Total Gross | Release Date | Distributor
| Estimated
|
|---|
| 1 | From Today, It's My Turn: The Movie | - | - | - | $22,954,819 | - | $47,866,854 | Jul 17 | Toho | false |
| 2 | Doraemon the Movie: Nobita's New Dinosaur | - | - | - | $22,368,853 | - | $31,236,777 | Aug 7 | Toho | false |
| 3 | The Confidence Man JP: Princess | - | - | - | $17,779,603 | - | $35,762,324 | Jul 23 | Toho | false |
| 4 | Fate/stay night [Heaven's Feel] III. spring song | - | - | - | $11,507,310 | - | $17,850,900 | Aug 15 | Aniplex | false |
| 5 | Threads - Our Tapestry of Love | - | - | - | $7,170,278 | - | $20,444,185 | Aug 21 | Toho | false |
| 6 | Love Me, Love Me Not | - | - | - | $4,792,983 | - | $6,352,692 | Aug 14 | Toho | false |
| 7 | Yowamushi Pedal: The Movie 2020 Re-release | - | - | - | $3,946,458 | - | $5,624,218 | Aug 14 | Shochiku | false |
| 8 | Onward | - | - | - | $3,872,102 | - | $8,206,650 | Aug 21 | Walt Disney Pictures | false |
| 9 | Grand Blue | - | - | - | $3,599,098 | - | $3,930,159 | Aug 7 | Warner Bros. | false |
| 10 | Stigmatized Properties | - | - | - | $3,394,403 | - | $21,204,112 | Aug 28 | Shochiku | false |
| 11 | Hinatazaka46 Documentary Movie: Debut After 3 Years | - | - | - | $992,816 | - | $1,143,074 | Aug 7 | Independent Films | false |
| 12 | Given | - | - | - | $930,363 | - | $930,363 | Aug 22 | Aniplex | false |
| 13 | Princess Mononoke Studio Ghibli Fest 2020 | - | - | - | $690,265 | - | $7,673,132 | Jun 26 | Toho | false |
| 14 | Spirited Away Studio Ghibli Fest 2020 | - | - | - | $624,716 | - | $7,724,246 | - | Toho | false |
| 15 | Nausicaä of the Valley of the Wind 2020 Re-release | - | - | - | $507,235 | - | $6,393,174 | Jul 18 | Toei Company | false |
| 16 | Ultraman Ginga S: Showdown! Ultra 10 Warriors!! 2020 Re-release | - | - | - | $344,864 | - | $506,125 | Mar 14 | Shochiku | false |
| 17 | The Invisible Man | - | - | - | $291,516 | 176 | $1,933,009 | Jul 10 | Toho-Towa | false |
| 18 | Eyes on Me: The Movie | - | - | - | $168,524 | - | $267,571 | Aug 7 | Avex Entertainment | false |
| 19 | Toei Manga Matsuri 2020 | - | - | - | $134,340 | - | $231,148 | Aug 14 | Toei Company | false |
| 20 | Secret × Heroine Phantomirage! ~We've Become a Movie~ | - | - | - | $126,406 | - | $899,992 | Jul 23 | Kadokawa | false |
| 21 | Kiss Him, Not Me | - | - | - | $77,749 | - | $1,669,719 | Jul 10 | Shochiku | false |
| 22 | 47 Meters Down: Uncaged | - | - | - | $67,905 | 8 | $711,342 | Jul 23 | Gaga | false |
| 23 | Step | - | - | - | $61,788 | - | $725,513 | Jul 17 | Avex Entertainment | false |
| 24 | Dolittle | - | - | - | $60,575 | 350 | $5,247,189 | Jun 19 | Toho-Towa | false |
| 25 | Good Boys | - | - | - | $2,692 | 51 | $258,079 | Jun 12 | Parco Co. Ltd. | false |
