List of South Korean films of 2003
A list of films produced in South Korea in 2003:
Box office
The highest-grossing South Korean films released in 2003, by domestic box office admissions, are as follows:| Rank | Title | Distributor | Admissions |
| 1 | Silmido | Cinema Service | 11,074,000 |
| 2 | Memories of Murder | CJ Entertainment | 5,101,645 |
| 3 | My Tutor Friend | CJ Entertainment | 4,809,871 |
| 4 | Untold Scandal | CJ Entertainment | 3,345,268 |
| 5 | Oldboy | Show East | 3,260,000 |
| 6 | Oh! Brothers | Showbox | 3,125,256 |
| 7 | A Tale of Two Sisters | Cineclick Asia | 3,110,000 |
| 8 | Once Upon a Time in a Battlefield | Cineworld | 2,835,000 |
| 9 | My Teacher, Mr. Kim | Cinema Service | 2,470,000 |
| 10 | Crazy First Love | CJ Entertainment | 2,340,000 |