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