2021 Sun Belt Conference baseball tournament

The 2021 Sun Belt Conference baseball tournament was held at Riverwalk Stadium in Montgomery, Alabama, from May 25 to May 30. The tournament used a double-elimination format as in past years. South Alabama, the winner of the tournament, earned the Sun Belt Conference's automatic bid to the 2021 NCAA Division I baseball tournament.

Seeding
Since 2017, the top ten teams (based on conference results) from the conference earn are invited to the tournament. The teams will be seeded based on conference winning percentage, with the bottom four seeds competing in a play-in round. The remaining eight teams will then play a two bracket, double-elimination tournament. The winner of each bracket will play a championship final.