| Type: | NAIA |
| Year: | 2021 |
| Teams: | 48 |
| Fabfourarena: | Municipal Auditorium |
| Fabfourcity: | Kansas City, Missouri |
| Champions: | Shawnee State (Ohio) |
| Titlecount: | 1 |
| Champgamecount: | 1 |
| Champffcount: | 1 |
| Runnerup: | Lewis–Clark State (Idaho) |
| Gamecount: | 1 |
| Runnerffcount: | 1 |
| Semifinal1: | SAGU (Texas) |
| Semifinal2: | Saint Francis (Ind.) |
| Coty: | Delano Thomas |
| Cotyschool: | Shawnee State |
| Mvp: | James Jones |
| Mvpteam: | Shawnee State |
| Hustle: | Antwaan Cushingberry |
| Hustleschool: | Saint Francis (Ind.) |
| Attendance: | 0 |
The 2021 NAIA men's basketball tournament was held March 12–23 at Municipal Auditorium in Kansas City, Missouri. The 83rd annual NAIA basketball tournament featured 48 teams playing in a single-elimination format. The opening game round was played on March 12 and 13, producing 16 teams which got reseeded for the championship round. The National Championship Game was played on March 23.[1] [2]