| Details | |
|---|---|
| Duration | 30 December 2002 – 11 January 2004 |
| Edition | 26th |
| Tournaments | 135 |
| Achievements (singles) | |
← 2002 2004 → | |
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2003 ATP Challenger Series calendar comprised 135 tournaments, with prize money ranging from $25,000 up to $150,000.[1][2]