| # | Weekend End Date | Film | Weekend Gross (millions) | Notes |
| 1 | January 6, 2003 | The Lord of the Rings: The Two Towers | $3.84 | |
| 2 | January 12, 2003 | The Lord of the Rings: The Two Towers | $2.50 | Just Married was #1 in America. |
| 3 | January 19, 2003 | The Lord of the Rings: The Two Towers | $1.80 | Kangaroo Jack was #1 in America. |
| 4 | January 26, 2003 | The Lord of the Rings: The Two Towers | $1.08 | Darkness Falls was #1 in America. |
| 5 | February 2, 2003 | The Recruit | $1.43 | |
| 6 | February 9, 2003 | How to Lose a Guy in 10 Days | $2.86 | |
| 7 | February 16, 2003 | Daredevil | $3.17 | |
| 8 | February 23, 2003 | Daredevil | $1.33 | |
| 9 | March 2, 2003 | Cradle 2 the Grave | $1.28 | |
| 10 | March 9, 2003 | Tears of the Sun | $1.61 | Bringing Down the House was #1 in America. |
| 11 | March 16, 2003 | Agent Cody Banks | $1.52 | Bringing Down the House was #1 in America. |
| 12 | March 23, 2003 | Dreamcatcher | $1.29 | Bringing Down the House was #1 in America. |
| 13 | March 30, 2003 | Basic | $1.24 | Head of State was #1 in America. |
| 14 | April 6, 2003 | Phone Booth | $1.69 | |
| 15 | April 13, 2003 | Anger Management | $3.44 | |
| 16 | April 20, 2003 | Anger Management | $2.60 | |
| 17 | April 27, 2003 | Anger Management | $1.52 | Identity was #1 in America. |
| 18 | May 4, 2003 | X2: X-Men United | $7.82 | |
| 19 | May 11, 2003 | X2: X-Men United | $3.60 | |
| 20 | May 18, 2003 | The Matrix Reloaded | $8.83 | The Matrix Reloaded had the highest weekend debut of 2003. |
| 21 | May 25, 2003 | Bruce Almighty | $4.92 | |
| 22 | June 1, 2003 | Finding Nemo | $3.72 | |
| 23 | June 8, 2003 | 2 Fast 2 Furious | $3.53 | |
| 24 | June 15, 2003 | Finding Nemo | $2.12 | Finding Nemo reclaimed #1 in its third weekend of release. |
| 25 | June 22, 2003 | Hulk | $4.01 | |
| 26 | June 29, 2003 | Charlie's Angels: Full Throttle | $3.59 | |
| 27 | July 6, 2003 | Terminator 3: Rise of the Machines | $3.61 | |
| 28 | July 13, 2003 | Pirates of the Caribbean: The Curse of the Black Pearl | $3.66 | |
| 29 | July 20, 2003 | Bad Boys II | $2.65 | |
| 30 | July 27, 2003 | Lara Croft Tomb Raider: The Cradle of Life | $2.29 | Spy Kids 3-D: Game Over was #1 in America. |
| 31 | August 3, 2003 | American Wedding | $3.11 | |
| 32 | August 10, 2003 | S.W.A.T. | $3.11 | |
| 33 | August 17, 2003 | S.W.A.T. | $1.48 | Freddy vs. Jason was #1 in America. |
| 34 | August 24, 2003 | S.W.A.T. | $1.17 | Freddy vs. Jason was #1 in America. |
| 35 | August 31, 2003 | S.W.A.T. | $1.16 | Jeepers Creepers 2 was #1 in America. |
| 36 | September 7, 2003 | Pirates of the Caribbean: The Curse of the Black Pearl | $0.68 | Pirates of the Caribbean: The Curse of the Black Pearl reclaimed #1 in its ninth weekend of release. Dickie Roberts: Former Child Star was #1 in America. |
| 37 | September 14, 2003 | Once Upon a Time in Mexico | $2.25 | |
| 38 | September 21, 2003 | Underworld | $2.10 | |
| 39 | September 28, 2003 | The Rundown | $1.65 | |
| 40 | October 5, 2003 | School of Rock | $1.50 | |
| 41 | October 12, 2003 | Kill Bill: Volume 1 | $2.24 | |
| 42 | October 19, 2003 | The Texas Chainsaw Massacre | $1.62 | |
| 43 | October 26, 2003 | Scary Movie 3 | $3.66 | |
| 44 | November 2, 2003 | Scary Movie 3 | $1.65 | |
| 45 | November 9, 2003 | The Matrix Revolutions | $5.83 | |
| 46 | November 16, 2003 | Master and Commander: The Far Side of the World | $2.07 | Elf was #1 in America. |
| 47 | November 23, 2003 | The Cat in the Hat | $2.68 | |
| 48 | November 30, 2003 | The Cat in the Hat | $1.59 | |
| 49 | December 7, 2003 | The Last Samurai | $2.54 | |
| 50 | December 14, 2003 | The Last Samurai | $1.55 | Something's Gotta Give was #1 in America. |
| 51 | December 21, 2003 | The Lord of the Rings: The Return of the King | $8.41 | |
| 52 | December 28, 2003 | The Lord of the Rings: The Return of the King | $6.80 | |
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