National Professional Soccer League (1984–2001)
| Founded | April 18, 1984 (as AISA) |
|---|---|
| Folded | 2001 |
| Country | United States Canada |
| Number of clubs | 15 |
| Last champions | Milwaukee Wave (2000–01) |
The National Professional Soccer League was a professional indoor soccer league in the U.S. and Canada. It was originally called the American Indoor Soccer Association.