CLF may refer to:

  • CenturyLink Field, a stadium in Seattle, Washington
  • Center for a Livable Future
  • Chain link fence
  • Chlorine monofluoride (ClF)
  • Church of the Larger Fellowship
  • Clear Sky Lodge Airport's IATA code
  • Cliffs Natural Resources Inc., a business firm specializing in the mining of iron ore
  • Clifton Forge (Amtrak station)'s station code
  • Conservation Law Foundation, a legal environmental advocacy organization.
  • Contingency Logistics Flights - Space Shuttle missions STS-131 and STS-133
  • Common Log Format - A standardized text file format usually associated with web server logs
  • Common Look and Feel, a Government of Canada Internet standard
  • Unidad de Fomento, ISO 4217 code of a Chilean unit of account