FFU
FFU means:
- Fan filter unit , fan filter module for a clean room, device housing, etc.
- Federazija Futbolu Ukrajiny , the Football Association of Ukraine
- Femur-fibula-ulna syndrome , a mostly asymmetrical combination of defects in long tubular bones
- Focus-forming unit , the minimum amount of pathogens that reliably triggers a disease
- Research Center for Environmental Policy at the Free University of Berlin
- Fulda train station (DS100 code)
FF: U denotes:
- Final Fantasy Unlimited , an anime series based on the computer role-playing game Final Fantasy by Square Enix