Boreocanthon simplex is a species of dung beetle in the family Scarabaeidae. It is found in western North America.
Boreocanthon simplex expresses a considerably higher degree of morphological and color variation than other members of its genus, possibly constituting several species.
Boreocanthon simplex occurs from the Rocky Mountains westward. It may be found as far north as southern British Columbia and as far south as central Baja California. Across its range, it displays extreme ecological versatility and may be found in highly variable habitats including montane forests, shrub-steppe, and Mediterranean scrub. It may be found from elevations below to above .
Its remains have been recovered from the La Brea tar pits.
Boreocanthon simplex is a generalist and has been documented feeding on feces from diverse mammals including cattle, horses, goats, elk, deer, humans, bears, and rabbits. It will also feed on carrion.