FSH
FSH may refer to:
Medicine
- Follicle-stimulating hormone, a hormone that affects the reproductive system
 - Facioscapulohumeral muscular dystrophy, a disease that causes progressive impairment of muscles
 
Companies
- Fisher Scientific, a defunct American scientific equipment supplier
 - Flash Airlines, an Egyptian airline
 - Four Seasons Hotels and Resorts, a Canadian hospitality management company
 - Fox Sports Houston, a regional Fox Sports Net television station
 
Other
- Fukuoka SoftBank Hawks, Japanese professional baseball team
 - FastTrack Scripting Host, a software product for Windows operating systems
 - fish (Unix shell), an "exotic" Unix operating system shell
 - Florida State Hospital