Willard N. Greim (August 7, 1890 – June 27, 1982) was an American basketball administrator and coach.
In 1924, Denver Public Schools offered him the newly created position of director of health, education, and athletics.
There, he added swimming, golf, tennis, and gymnastics to the curriculum, and instituted after-school and summer sports programs.
Beginning in 1932, he served in several positions with the Amateur Athletic Union, including a period as a president of the AAU (1944–1947).
In 1955, he was credited with setting up an operating contract that saved the Denver Zoo from bankruptcy, and allowed for its expansion and improvement.