2021 NAIA baseball tournament

The 2021 NAIA baseball tournament was the 64th edition of the NAIA baseball championship. The 46-team tournament began on May 17 with Opening Round games across nine different sites and concluded with the 2021 NAIA World Series in Lewiston, Idaho that began on May 28 and ended on June 3. Georgia Gwinnett defeated Central Methodist (MO) 8–4 in the championship game for their first title in program history. This was the most recent championship game(s) in which both teams would be vying for their first national title.

The 46 participating teams were selected from all eligible NAIA teams with the World Series host receiving an automatic bid to the NAIA World Series. The remaining 45 teams participated in the Opening Round with 30 teams being awarded automatic bids as either champions and/or runners-up of their conferences, and 15 teams were selected at-large by the National Selection Committee. Teams were then placed into one of nine pre-determined Opening Round sites of five teams a piece, each of which is conducted via a double-elimination tournament. The winners of each of the Opening Round sites plus the World Series host team participated in the NAIA World Series.

This would be the final year in which the team hosting the NAIA World Series would bypass the Opening Round and directly receive an automatic bid to the World Series.

Tournament procedure
A total of 46 teams entered the tournament. As World Series host, Lewis–Clark State received an automatic bid into the NAIA World Series. 30 automatic bids were determined by either winning their conference's regular season championship, conference tournament, and/or conference tournament runner-up. The other 15 bids were at-large, with selections determined by the NAIA Baseball National Selection Committee.

Opening round hosts
On May 3, the NAIA announced the nine opening round host sites, which were played from May 17–20.

Opening Round
Source:

Bellevue Bracket
Hosted by Bellevue (NE) at Don Roddy Field in Bellevue, NE and Brown Park in Omaha, NE

Kingsport Bracket
Hosted by Visit Kingsport/Appalachian Athletic Conference at Hunter Wright Stadium

Lakeland Bracket
Hosted by Southeastern (FL) at Chain of Lakes Park in Winter Haven, FL

Marion Bracket
Hosted by Indiana Wesleyan at Wildcat Field

Montgomery Bracket
Hosted by Faulkner (AL) at Harrison Field

New Orleans Bracket
Hosted by Loyola (LA) at Segnette Field

O'Fallon Bracket
Hosted by Central Methodist (MO) at CarShield Field

Santa Barbara Bracket
Hosted by Westmont (CA) at Russell Carr Field

Williamsburg Bracket
Hosted by Cumberlands (KY) at Doyle Buhl Stadium

NAIA World Series
The NAIA World Series was held at Harris Field in Lewiston, Idaho.

Bracket
Source:

Game Results
All game times are listed in Pacific Daylight Time (UTC–07:00).