Nats or NATS may refer to:

• National Party (South Africa) and its supporters
• New Zealand National Party and its supporters
• Scottish National Party and its supporters

• Syracuse Nationals, an NBA team currently known as the Philadelphia 76ers
• Washington Nationals, the current baseball team in Washington, DC
  • Washington Nationals (disambiguation), any of a number of historical baseball teams
• Nats Park
• Nats Xtra
• Raleigh Nats
• Vancouver Nats, an ice hockey team from British Columbia, Canada

• NATS Holdings, the United Kingdom's main Air Navigation Service Provider
• North Atlantic Tracks
• Naval Air Transport Service, a branch of the United States Navy from 1941 to 1948

• Nat (unit), a unit of information
• Nat (spirit), in Burmese religion
• Nat caste, a social group of India
• NATS Messaging, an open source messaging (message oriented middleware) system
• National Association of Teachers of Singing, a professional organization for singing teachers
• Next-Generation Administration and Tracking System, an affiliate program backend
• Nihon Automobile High Technical School (Japanese Wikipedia)
• Nissan Anti-Theft System
• North Avenue Trade School

• Nat (disambiguation)
• Young Nationals (disambiguation)
• Gnat