The Warthog or Common Warthog (Phacochoerus africanus) is a wild member of the pig family that lives in grassland, savanna, and woodland in Sub-Saharan Africa. In the past it was commonly treated as a subspecies of P. aethiopicus, but today that scientific name is restricted to the Desert Warthog of northern Kenya, Somalia, and eastern Ethiopia.

The common name comes from the four large wart-like protrusions found on the head of the warthog, which serve the purpose of defence when males fight as well as a fat reserve.