Special Visual Effects used in film, television and entertainment

Sound effect, artificially created or enhanced sounds

The Super FX processor

SFX, an OpenURL Link Resolver from Ex Libris that helps library patrons navigate to resources and services relevant to their search queries

SFX magazine, a science fiction-related magazine

SFX (group), a psychedelic trance musical band that changed their name to Astral Projection

Self-extracting archive, a compressed file with an embedded executable to decompress itself

SFX may refer to one of many schools named after St Francis Xavier.

Ilford SFX, a photographic film

Star Fox

SFX Promotions, a music promotion company purchased by Clear Channel Entertainment