FSH may refer to:
- FastTrack Scripting Host, a software product for Windows operating systems
- Follicle-stimulating hormone
- Fox Sports Houston, a regional Fox Sports Net affiliate station for the Houston, Texas area
- Facioscapulohumeral muscular dystrophy
- International Civil Aviation Organisation code for Flash Airlines
- Former Toronto Stock Exchange symbol for Four Seasons Hotels
- Fukuoka Softbank Hawks, Japanese professional baseball team
- File System Hierarchy or Filesystem Hierarchy Standard, defines the main directories and their contents in GNU/Linux and other Unix-like computer operating systems