The Mobile Army Surgical Hospital (MASH) was a fully functional hospital unit maintained by the U.S. Army Medical Corps in a combat zone.

MASH units, established in August 1945, were deployed during the Korean War and later conflicts until 2006. The successor to the Mobile Army Surgical Hospital is the Combat Support Hospital.

The CBS TV comedy series MASH aired from 1972 to 1983.

The series, derived from the 1970 feature film M*A*S*H, was, in turn, based on a 1968 novel by Richard Hooker’s entitled MASH: A Novel About Three Army Doctors.