The 1981 NCAA Division III baseball tournament was played at the end of the 1981 NCAA Division III baseball season to determine the sixth national champion of college baseball at the NCAA Division III level.
The tournament concluded with four teams competing at Pioneer Park in Marietta, Ohio, for the championship.
Four regional tournaments were held to determine the participants in the World Series.
[1] The 24 competing teams were: Wisconsin-Oshkosh (4–0), Elmhurst (2–2), Otterbein (2–2), Claremont-Mudd-Scripps (1–2), St. Olaf (1–2), Buena Vista (0–2) North Carolina Wesleyan (4–1), Lynchburg (3–2), Ramapo (2–2), Upsala (2–2), William Paterson (1–2), Salisbury State (1–2) Ada, OH (Host: Ohio Northern University) Marietta (5–1), Alma (3–2), York (PA) (2–2), Wooster (1–2), Monmouth (IL) (0–2), Ohio Northern (0–2) Willimantic, CT (Host: Eastern Connecticut State College) Ithaca (5–1), Eastern Connecticut State (3–2), unknown (2–2), Westfield State (1–2), Queens (0–2), SUNY Cortland (0–2) Pioneer Park-Marietta, OH (Host: Marietta College)
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