| Type: | NIT |
| Year: | 1990 |
| Teams: | 32 |
| Finalfourarena: | Madison Square Garden |
| Finalfourcity: | New York City |
| Champions: | Vanderbilt Commodores |
| Titlecount: | 1st |
| Runnerup: | Saint Louis Billikens |
| Gamecount: | 4th |
| Semifinal1: | Penn State Nittany Lions |
| Semifinalcount: | 1st |
| Semifinal2: | New Mexico Lobos |
| Semifinalcount2: | 2nd |
| Coach: | Eddie Fogler |
| Coachcount: | 1st |
| Mop: | Scott Draud |
| Mopteam: | Vanderbilt |
The 1990 National Invitation Tournament was the 1990 edition of the annual NCAA college basketball competition. This tournament adopted the tenths-second game clock in the final minute of every period when played in NBA arenas, unlike whole seconds as in past years.
Below is a list of the 32 teams selected for the tournament.[1]
Below are the four first round brackets, along with the four-team championship bracket.