The 2020 Lamar Cardinals baseball team represented Lamar University in the 2020 NCAA Division I baseball season. The Cardinals played their home games at Vincent–Beck Stadium and are members of the Southland Conference. The team was coached by Will Davis in his 4th season at Lamar. On March 12, the Southland Conference announced a suspension of Spring sports through March 30 due to the COVID-19 pandemic. The conference announced that all remaining Spring 2020 sports contests were cancelled on March 14.