Kenyon Leech Butterfield (June 11, 1868 – November 25, 1936) was an American agricultural scientist and college administrator known for developing the Cooperative Extension Service at the Land Grant Universities. He was president of the Rhode Island College of Agriculture and Mechanic Arts (1903-1906); the Massachusetts Agricultural College (1906-1924), and the Michigan Agricultural College, (later Michigan State College of Agriculture and Applied Science, which is now Michigan State University) from 1924 to 1928.