Stephen David Durrant (October 11, 1902 – November 11, 1975) was an American mammalogist from Salt Lake City, Utah and past president of the American Society of Mammalogists known for his work with pocket gophers of the genus Thomomys and other rodents of the Great Basin.

Born October 11, 1902, Durant served as a missionary for the Church of Jesus Christ of Latter-day Saints (LDS Church) in Switzerland after high school.

He stayed at the University of Utah for graduate school, pursuing zoology and earning a M.S.

Over the course of his career he described 37 new subspecies or races of assorted small mammals, including gophers, mice, kangaroo rats, beavers, and picas.

[2] Durrant's 1952 book Mammals of Utah: Taxonomy and Distribution presented taxonomic synopses of 247 species and subspecies of Utah mammals, as well as Durrant's explanations for the origins of such diversity: largely that the geographic and hydrological history of the region, especially the prehistoric Lake Bonneville, promotes reproductive isolation and subsequent speciation or sub-speciation.