The kouprey (Bos sauveli), also known as the forest ox, is a possibly extinct species of forest-dwelling wild bovine native to Southeast Asia. A young male was sent to the Paris Zoological Park in 1937 and was described by the French zoologist Achille Urbain who declared it the holotype. The kouprey has a tall, narrow body, long legs, a humped back and long horns.

The kouprey has not been sighted since 1969–1970. A camera trapping survey in the region of these sightings failed to document it in 2011. It has been listed as Critically Endangered, and possibly extinct, on the IUCN Red List since 1996.

The kouprey is the national animal of Cambodia and is also the nickname of their football team.