| 2003 BellSouth Open | |
|---|---|
| Date | 10–16 February |
| Edition | 10th |
| Category | International Series |
| Draw | 32S / 16D |
| Prize money | $320,000 |
| Surface | Clay / outdoor |
| Location | Viña del Mar, Chile |
| Champions | |
| Singles | |
 David Sánchez[1] | |
| Doubles | |
 Agustín Calleri / Mariano Hood[2] | |
The 2003 BellSouth Open was a men's tennis tournament played on outdoor clay courts in Viña del Mar in Chile and was part of the International Series of the 2003 ATP Tour. It was the tenth edition of the tournament and ran from 10 February through 16 February 2003. Unseeded David Sánchez won the singles title.
