The 2025 Northwestern State Demons baseball team represented Northwestern State University during the 2025 NCAA Division I baseball season. The Demons played their home games at H. Alvin Brown–C. C. Stroud Field and were led by second–year head coach Chris Bertrand. They are members of the Southland Conference. Northwestern State compiled a 35–21 overall record and a 19–11 conference record. The Demons' season ended with a 2–2 record in the 2025 SLC tournament. 
Preseason.
Southland Conference Coaches Poll.
The Southland Conference Coaches Poll was released on February 6, 2025. Northwestern State was picked to finish eighth in the Southland Conference with 89 overall votes.
Preseason All-Southland team.
Rocco Gump and Reese Lipoma were named to the conference preseason first team. Balin Valentine and Tyler Bryan were named to the conference preseason second team.
First Team.
"*-2024 Southland All-Conference Selection"
"+-Tie for final spot"
Second Team.
"*-2024 Southland All-Conference Selection"
"+-Tie for final spot"