| Details | |
|---|---|
| Duration | 25 January 1999 – 12 December 1999 |
| Edition | 22nd |
| Tournaments | 115 |
| Achievements (singles) | |
← 1998 2000 → | |
The ATP Challenger Series is the second tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1999 ATP Challenger Series calendar comprised 115 tournaments, with prize money ranging from $25,000 up to $125,000.[1][2]