LAF may refer to:
- Lafayette, Indiana (Amtrak station), United States; Amtrak station code LAF
- Lance Armstrong Foundation
- Lean air-fuel
- Lebanese Air Force
- Lebanese Armed Forces
- Lithuanian Activist Front
- Purdue University Airport, Indiana, United States; IATA airport code LAF
- The ICAO operator designator for the Latvian Air Force, Latvia.
- Luftseilbahn Adliswil-Felsenegg, an aerial tramway in Adliswil, Switzerland
- LaF - an abbr. for Look and feel, a computer related term