Bill Theunissen Stadium is a baseball venue in Mount Pleasant, Michigan, United States.

It is home to the Central Michigan Chippewas baseball team of the NCAA Division I Mid-American Conference.

It is named after Bill Theunissen, former Central Michigan baseball coach, who led the Chippewas to a 151-114-1 record during his tenure (1953–1962).

The old facility's name, changed from Alumni Field in 1986, was kept for the new Bill Theunissen Stadium.

[2] Features of the facility include 400 chairbacked seats, a press box, message board, electronic scoreboard, outdoor practice area, and the Keilitz Clubhouse.