Robert Dwight Leeper (June 29, 1891 – December 19, 1932)[1] was an American attorney and justice of the Idaho Supreme Court.

Born in Tacoma, Washington, Leeper was raised in northern Idaho at Lewiston and Coeur d'Alene, graduating from high school in 1909.

Leeper served as an infantry officer in the United States Army in World War I, where he met his wife, Grace Ann Hanly (1889–1941) of Thomaston, Maine, a Red Cross nurse.

[3] At age 40, Leeper took his seat in Boise on January 1, 1932, but died of pneumonia on December 19, less than a year into his term.

[1][4][5][6] His funeral was in Lewiston at St. Stanislaus Catholic Church on December 22, with burial at Normal Hill Cemetery.