SFJ may refer to:
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Saphenofemoral junction, an anatomical structure in the groin
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StarFlyer
(), styled as StarFlyer, is a Japanese airline headquartered on the grounds of Kitakyushu Airport in Kokuraminami-ku, Kitakyūshū, Fukuoka Prefecture. It describes itself as a "hybrid airline" providing a higher level of service than low-cos ...
(ICAO airline code)
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Kangerlussuaq Airport (IATA airport code)
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Super Formula Japan, a Japanese car-racing championship
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