SFL may refer to:
Sports leagues Association football Serbian First League, an association football league in Serbia Southern Football League, an association football league in England Soviet First League, a former association football league in the Soviet Union Super Football League, an inter-city football league in Pakistan Scottish Football League, a former association football league Southern Football League (Scotland), wartime league Sunday Football League (Lithuania) Swiss Football League
Australian rules football Southern Football League (South Australia) Southern Football League (Tasmania) Southern Football League (Victoria) Sunday Football League, Perth, Western Australia Sunraysia Football League, Victoria
Other sports Spring Football League, former American football league Stars Football League, Grand Rapids, Michigan, US Super Fight League, mixed martial arts league, India Swedish Futsal League
Other uses Saskatchewan Federation of Labour, Canada Scandinavian Ferry Lines Sci-Fi-London, a film festival in England Students for Liberty, American organization System Function Language of the ICL VME operating system Systemic functional linguistics, language as a social semiotic system