Japanese Box Office For April 2013
| Rank | Release | Gross | Max Th | Opening | % of Total | Open Th | Open | Close | Distributor |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Detective Conan: Private Eye in the Distant Sea | $36,054,366 | 344 | $7,203,139 | 20% | 344 | Apr 20 | - | Toho |
| 2 | Iron Man 3 | $25,185,661 | 540 | $4,229,227 | 16.8% | 535 | Apr 26 | - | Walt Disney Pictures |
| 3 | Shield of Straw | $17,815,840 | 325 | - | - | - | Apr 26 | - | Warner Bros. |
| 4 | Library Wars | $16,735,127 | 311 | - | - | - | Apr 27 | - | Toho |
| 5 | Kureyon Shin-chan 2013 Re-release | $12,572,797 | 330 | $2,417,437 | 19.2% | 324 | Apr 20 | - | Toho |
| 6 | Lincoln | $9,467,518 | 332 | $1,747,227 | 18.5% | 331 | Apr 19 | - | 20th Century Fox International |
| 7 | Kamen Rider × Super Sentai × Space Sheriff: Super Hero Taisen Z | $8,918,825 | 289 | - | - | - | Apr 27 | - | Toei Company |
| 8 | The Great Passage | $7,087,031 | 238 | $1,220,041 | 17.2% | 237 | Apr 13 | - | Shochiku |
| 9 | Steins;Gate: The Movie - Load Region of Déjà Vu | $4,843,719 | 48 | $931,275 | 19.2% | 18 | Apr 20 | - | - |
| 10 | Chinese Zodiac | $3,642,086 | 396 | $962,695 | 26.4% | 155 | Apr 13 | - | - |
| 11 | The Last Stand | $2,834,309 | 266 | $560,136 | 19.8% | 266 | Apr 27 | - | Shochiku |
| 12 | Quartet | $1,679,710 | - | - | - | - | Apr 19 | - | - |
| 13 | HK: Forbidden Super Hero | $646,830 | 22 | - | - | - | Apr 6 | - | - |
| 14 | Eiga Hanakappa: Hanasake! Pakkân Chou no kuni no daibouken | $507,114 | 146 | $231,114 | 45.6% | 146 | Apr 12 | - | - |
| 15 | Killing Them Softly | $441,788 | 161 | $309,969 | 70.2% | 161 | Apr 26 | - | - |
| 16 | Orpheus' Lyre | $178,145 | 109 | $178,145 | 100% | 109 | Apr 6 | - | Showgate |
