CSJ

CSJ or C.S.J. may refer to:


 * Campaign for Social Justice, a group which began campaigning for civil rights in Northern Ireland in 1964
 * Centre for Social Justice
 * CSJ Alliance
 * CSJ Awards
 * Chemical Society of Japan
 * Congregation of the Sisters of Saint Joseph
 * Cultic Studies Journal predecessor to the Cultic Studies Review
 * ICAO airline designator for Castle Aviation
 * Jung Chan-Sung, a South Korean mixed martial artist
 * Superior Council of the Judiciary of Colombia