| Details | |
|---|---|
| Duration | 3 January 2005 – 1 January 2006 |
| Edition | 28th |
| Tournaments | 151 |
| Achievements (singles) | |
← 2004 2006 → | |
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 2005 ATP Challenger Series calendar comprised 150 tournaments, with prize money ranging from $25,000 up to $150,000.[1][2]