2003 Davis Cup
| Details | |
|---|---|
| Duration | 7 February – 30 November 2003 | 
| Edition | 92nd | 
| Teams | 135 | 
| Champion | |
| Winning nation | Australia | 
| ← 2002  2004 →  | |
The 2003 Davis Cup was the 92nd edition of the most important tournament between nations in men's tennis. A total of 135 nations participated in the tournament. In the final, Australia defeated Spain at Rod Laver Arena in Melbourne, Australia, on 28–30 November, giving Australia their 28th title.