| Details | |
|---|---|
| Duration | 12 January 1981 – 13 December 1981 |
| Edition | 4th |
| Tournaments | 47 |
| Achievements (singles) | |
← 1980 1982 → | |
The ATP Challenger Series is the second-tier tour for professional tennis organised by the Association of Tennis Professionals (ATP). The 1981 ATP Challenger Series calendar comprises 46 tournaments, with prize money ranging from $25,000 up to $75,000.[1]