The 2021 Jacksonville Dolphins baseball team represented Jacksonville University during the 2021 NCAA Division I baseball season.

The Dolphins played their home games at John Sessions Stadium as a member of the Atlantic Sun Conference They were led by head coach Chris Hayes, in his fifth year as head coach.

The 2020 Jacksonville Dolphins baseball team notched a 9–9 (0–0) regular-season record.

The season prematurely ended on March 12, 2020, due to concerns over the COVID-19 pandemic.