FH, Fh, or fh may refer to:
Businesses and institutions
- Danish Trade Union Confederation ()
- Faculty of Humanities (The Hong Kong Polytechnic University)
- Fachhochschule, in German, a college of higher education
- Federation of the Swiss Watch Industry FH
- Futura International Airways (IATA code)
Science and technology
Biology and medicine
- Familial hypercholesterolemia, a genetic disorder
- Factor H, a complement control protein
- Family history
- FH, a gene that encodes the enzyme fumarase
Chemistry
- Ferrihydrite (Fh), a widespread hydrous ferric oxyhydroxide mineral
Other uses in science and technology
- McDonnell FH Phantom, the U.S. Navy's first jet-powered fighter aircraft
- Falcon Heavy, Spacex's heavy lift reusable rocket
Sport
- Fimleikafélag Hafnarfjarðar, Icelandic football club
Other uses
- fh (digraph); appears in Irish and some other languages
- Volvo FH, a range of trucks