List of American films of 2003
This is a list of American films released in 2003.
Box office
The highest-grossing American films released in 2003, by domestic box office gross revenue, are as follows:| Rank | Title | Distributor | Domestic gross |
| 1 | The Lord of the Rings: The Return of the King | New Line Cinema | $377,027,325 |
| 2 | Finding Nemo | Disney | $339,714,184 |
| 3 | Pirates of the Caribbean: The Curse of the Black Pearl | Disney | $305,398,779 |
| 4 | The Matrix Reloaded | Warner Bros. Pictures | $281,576,461 |
| 5 | Bruce Almighty | Universal Pictures | $242,829,261 |
| 6 | X2 | 20th Century Fox | $214,949,694 |
| 7 | Elf | New Line Cinema | $167,547,000 |
| 8 | Terminator 3: Rise of the Machines | Warner Bros. Pictures | $150,371,112 |
| 9 | The Matrix Revolutions | Warner Bros. Pictures | $139,313,948 |
| 10 | Cheaper by the Dozen | 20th Century Fox | $138,614,544 |