Mats is a masculine given name, the Scandinavian form of Matthew.
MATS as an acronym may refer to:
- Montgomery Area Transit System, the public transportation in Montgomery, Alabama
- Metropolitan Adelaide Transport Study, an abandoned transport scheme for the city of Adelaide.
- Measurements with Advanced Trapping Systems, an Helmholtz research group for young investigators.
- Military Air Transport Service, a defunct command of the United States Air Force.
- Car mats, used to keep your vehicle dirt free.
- Mercury and Air Toxics Standards
The 'Mats is a nickname for rock band The Replacements.