KSJ
KSJ or ksj may refer to:

 Kasganj Junction railway station (Station code: KSJ), a railway station in Uttar Pradesh, India
 Kasos Island Public Airport (IATA: KSJ), an airport in Kasos, Greece
 Knight Science Journalism, an American journalism award
 Kwale language (ISO 639-3: ksj), a language of Papua New Guinea