QSF

QSF may refer to:
 * Quebec Soccer Federation
 * Qalamoun Shield Forces, a Syrian militia
 * IATA code for Ain Arnat Airport, an airport in Algeria
 * Unofficial code for airports in the San Francisco Metropolitan Area, used in some ticketing systems but not approved by IATA
 * An uncompressed variant of the Portable Sound Format
 * Extension and file format for data files exported by Qualtrics online survey software