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, worldwide Unitarian Universalist congregation Clear Sky Lodge Airport's FAA code RAF Coltishall's IATA code Cleveland-Cliffs Inc., a business firm specializing in the mining of iron ore in the United States Clifton Forge (Amtrak station)'s station code The Congressional Leadership Fund, dedicated to electing Republicans to the U.S. House of Representatives Conservation Law Foundation, a legal environmental advocacy organization Common Log Format - A standardized text file format usually associated with web server logs Common Look and Feel, a Government of Canada Internet standard Commonwealth Literary Fund (1908–1974), an Australian Government body Unidad de Fomento, ISO 4217 code of a Chilean unit of account