| Year: | 1999 |
| Conference: | Big Ten |
| Division: | I |
| Gender: | Women's |
| Teams: | 5 |
| Format: | Double-elimination |
| Ballpark: | Alumni Field |
| City: | Ann Arbor, Michigan |
| Champions: | Minnesota |
| Titlecount: | 1st |
| Coach: | Lisa Bernstein & Julie Standering |
| Coachcount: | 1st |
| Runnerup: | Michigan |
| Runnerupgamecount: | 6th |
The 1999 Big Ten softball tournament was held at Alumni Field on the campus of the University of Michigan in Ann Arbor, Michigan.[1] As the tournament winner, Minnesota earned the Big Ten Conference's automatic bid to the 1998 NCAA Division I softball tournament. This was the first Big Ten softball tournament championship for Minnesota.
The 1999 tournament was a five team double-elimination tournament except for the play-in game between 4th-seeded Michigan State and 5th-seeded Iowa. The top five teams based on conference regular season winning percentage earned invitations to the tournament.