FJS

FJS may refer to:


 * Fallskärmsjägarskolan (FJS), the Swedish Parachute Ranger School
 * French Japanese Society for fine and medicinal chemistry
 * Fajar Secondary School (FJS), in Bukit Panjang, Singapore
 * FJ-S Cruiser Concept, a concept version of the Toyota FJ Cruiser
 * FJS-1, a type of lunar regolith simulant
 * FJS, airline code for Florida Jet Service
 * Federación Juvenil Socialista (FJS), Chilean socialist party joined by revolutionary Miguel Enríquez
 * Federación de Juventudes Socialistas (FJS), one of the original parties consolidated into the Communist Party of Spain
 * Franz Josef Strauss, West German politician (1915-1988)