Harrison Jean "Jim" Kaiser (August 15, 1899 – February 23, 1974) was an American football, basketball, and baseball coach and college athletics administrator.

He served as the head football coach at State Teachers College in Lock Haven—now known as Lock Haven University of Pennsylvania—from 1931 to 1933 and at the Teachers College of Connecticut—now known as Central Connecticut State University—from 1935 to 1947, compiling career college football coaching record of 49–20–8.

A native of Wells, Minnesota, Kaiser attended North Central College in Naperville, Illinois, where he won 13 varsity letters, in football, basketball, baseball, and track.

[2] His 1933 team outscored opponents by a total of 240 to 22 and achieved seven shutouts.

Central Connecticut did not field a football team from 1942 to 1945 due to World War II.