Fus
- FUS (gene)
- Fath Union Sport
- Feline urologic syndrome
- Fire Underwriters Survey
- First Unitarian Society of Madison
- First Unitarian Society of Minneapolis
- Franciscan University of Steubenville
- Franklin University Switzerland
- Fuck U Skrillex You Think Ur Andy Warhol but Ur Not!!
- High-intensity focused ultrasound
- Socialist Single Front
- Transcranial pulsed ultrasound