SFJ

SFJ may refer to:

Saphenofemoral junction, an anatomical structure in the groin StarFlyer (ICAO airline code) Kangerlussuaq Airport (IATA airport code) Super Formula Japan, a Japanese car-racing championship Sikhs for Justice, a pro-Khalistan (Sikh separatist) group based in the US Sydfyenske Jernbaner, a former Danish railway company