This is a list of films which have placed number one at the weekend box office in Japan during 2011.
| † | This implies the highest-grossing movie of the year. |
| # | Date | Film | Gross | Notes |
|---|---|---|---|---|
| 1 | January 9, 2011 | Gantz | $14,788,986 | |
| 2 | January 16, 2011 | $18,462,208 | ||
| 3 | January 23, 2011 | The Social Network | $13,015,217 | |
| 4 | January 30, 2011 | $12,550,966 | ||
| 5 | February 6, 2011 | Unstoppable | $2,747,653 | |
| 6 | February 13, 2011 | Gantz | $16,668,765 | |
| 7 | February 20, 2011 | Hereafter | $31,111,742 | |
| 8 | February 27, 2011 | The Chronicles of Narnia: The Voyage of the Dawn Treader | $16,693,133 | |
| 9 | March 6, 2011 | Doraemon: Nobita and the New Steel Troops—Winged Angels | $20,399,714 | |
| 10 | March 13, 2011 | SP: The Motion Picture II | $12,256,453 | |
| 11 | March 20, 2011 | $17,320,450 | ||
| 12 | March 27, 2011 | $17,124,995 | ||
| 13 | April 3, 2011 | OOO, Den-O, All Riders: Let's Go Kamen Riders | $18,197,301 | |
| 14 | April 10, 2011 | $12,344,643 | ||
| 15 | April 17, 2011 | Detective Conan: Quarter of Silence | $19,230,726 | |
| 16 | April 24, 2011 | Gantz: Perfect Answer | $20,290,149 | |
| 17 | May 1, 2011 | Detective Conan: Quarter of Silence | $20,290,149 | |
| 18 | May 8, 2011 | Gaku: Minna no Yama | $13,843,743 | |
| 19 | May 15, 2011 | Black Swan | $13,000,858 | |
| 20 | May 22, 2011 | Pirates of the Caribbean: On Stranger Tides | $27,081,618 | |
| 21 | May 29, 2011 | $23,240,411 | ||
| 22 | June 5, 2011 | $21,244,530 | ||
| 23 | June 12, 2011 | $26,244,971 | ||
| 24 | June 19, 2011 | $19,254,560 | ||
| 25 | June 26, 2011 | $18,724,720 | ||
| 26 | July 3, 2011 | Super 8 | $15,929,725 | |
| 27 | July 10, 2011 | Pirates of the Caribbean: On Stranger Tides | $11,980,622 | |
| 28 | July 17, 2011 | Harry Potter and the Deathly Hallows – Part 2 † | $26,681,963 | |
| 29 | July 24, 2011 | $20,394,041 | ||
| 30 | July 31, 2011 | Transformers: Dark of the Moon | $30,266,577 | |
| 31 | August 7, 2011 | $26,237,614 | ||
| 32 | August 14, 2011 | Harry Potter and the Deathly Hallows – Part 2 † | $27,278,499 | |
| 33 | August 21, 2011 | $25,687,868 | ||
| 34 | August 28, 2011 | In His Chart | $18,796,358 | |
| 35 | September 4, 2011 | One Life | $15,694,489 | |
| 36 | September 11, 2011 | Detective in the Bar | $12,849,843 | |
| 37 | September 18, 2011 | Unfair 2: The Answer | $17,098,154 | |
| 38 | September 25, 2011 | Moteki | $14,129,696 | |
| 39 | October 2, 2011 | Fast Five | $20,319,711 | |
| 40 | October 9, 2011 | Rise of the Planet of the Apes | $17,281,604 | |
| 41 | October 16, 2011 | $12,907,568 | ||
| 42 | October 23, 2011 | $12,555,848 | ||
| 43 | October 30, 2011 | A Ghost of a Chance | $19,030,166 | |
| 44 | November 6, 2011 | $19,190,741 | ||
| 45 | November 13, 2011 | $15,430,084 | ||
| 46 | November 20, 2011 | $13,068,848 | ||
| 47 | November 27, 2011 | Eiga Kaibutsukun | $15,940,384 | |
| 48 | December 4, 2011 | $19,008,853 | ||
| 49 | December 11, 2011 | Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max | $21,550,334 | |
| 50 | December 18, 2011 | Mission: Impossible – Ghost Protocol | $21,728,656 | |
| 51 | December 25, 2011 | $22,484,033 | ||
| 52 | December 31, 2012 | $13,863,716 |
International film Japanese film
| Rank | Title | Gross [1] |
|---|---|---|
| 1 | Harry Potter and the Deathly Hallows – Part 2 | ¥9.67 billion ($121.17 million) |
| 2 | Pirates of the Caribbean: On Stranger Tides | ¥8.87 billion ($111.14 million) |
| 3 | Harry Potter and the Deathly Hallows – Part 1 | ¥6.86 billion ($85.96 million) |
| 4 | From Up on Poppy Hill | ¥4.46 billion ($55.88 million) |
| 5 | Pokémon the Movie: Black—Victini and Reshiram and White—Victini and Zekrom | ¥4.33 billion ($54.26 million) |
| 6 | A Ghost of a Chance | ¥4.28 billion ($53.63 million) |
| 7 | Transformers: Dark of the Moon | ¥4.25 billion ($53.25 million) |
| 8 | Space Battleship Yamato | ¥4.10 billion ($51.37 million) |
| 9 | Gantz | ¥3.45 billion ($43.23 million) |
| 10 | SP: The Motion Picture II | ¥3.33 billion ($41.73 million) |