China 
Africa 
- Falsework
- Falx cerebri
- Familial amyloid polyneuropathy
- Familial hypercholesterolemia
- Family history
- Family medicine
- Family of curves
- Family of sets
- Famotidine
- Fan
- Fan coil units
- Fan control
- Fan heaters
- Fan vault
- Fan-in
- Fan-out
- Fan-out wafer-level packaging
- Fanning friction factor
- Fano Plane
- Fano factor
- Fano resonance
- Far field
- Far infrared
- Far-infrared laser
- Far-sightedness
- Farad
- Faradaic current
- Faraday cage
- Faraday cup
- Faraday cup electrometer
- Faraday effect
- Faraday efficiency
- Faraday rotator
- Faraday's constant
- Faraday's law of induction
- Faraday's laws of electrolysis
- Farinograph
- Farkas' Lemma
- Farnesene
- Farnesyl pyrophosphate
- Farnesyltransferase
- Farnsworth-Munsell 100 Hue Test
- Fas ligand
- Fas receptor
- Fascia
- Fascia lata
- Fasciculi
- Fasciitis
- Fasciotomy
- Fashion design
- Fashion designers
- Fast fashion
- Fast fission
- Fast flux
- Fast fracture
- Fast ion conductor
- Fast marching method
- Fast packet switching
- Fast reactor
- Fast wavelet transform
- Fast-ion conductor
- Fast-neutron reactor
- Fast-track construction
- FastICA
- FastText
- Fastener
- Fastest
- Fastidious
- Fat
- Fat globules
- Fat necrosis
- Fat pad
- Fat substitutes
- Fat tail
- Fat tree
- Fathom
- Fatigue
- Fatigue avoidance scheduling tool
- Fatigue limit
- Fatigue test
- Fatigue testing
- Fatty acid amides
- Fatty acid desaturase
- Fatty acid esters
- Fatty acid metabolism
- Fatty acid methyl ester
- Fatty acid synthase
- Fatty acid synthesis
- Fatty acids
- Fatty alcohols
- Fatty liver
- Fatty liver disease
- Fatty streaks
- Faucet
- Faucet aerator
- Faujasite
- Fault blocks
- Fault breccia
- Fault coverage
- Fault current limiter
- Fault detection
- Fault detection and isolation
- Fault friction
- Fault gouge
- Fault management
- Fault scarps
- Fault tolerance
- Fault trace
- Fault tree analysis
- Faults
- Fauna
- Favipiravir
- Favre averaging
- Fax
- Fayalite
- Faying surfaces
- FcRn
- Fcεri
- Fear of flying
- Feasibility study
- Feasible region
- Feature creep
- Feature detection
- Feature engineering
- Feature extraction
- Feature hashing
- Feature integration theory
- Feature learning
- Feature phones
- Feature recognition
- Feature scaling
- Feature selection
- Feature vectors
- Febrile neutropenia
- Fecal coliform
- Fecal incontinence
- Fecal microbiota
- Fecal sludge
- Fecal-oral route
- Feces
- Fed-batch
- Fed-batch culture
- Federal Energy Administration
- Federal Energy Management Program
- Federal enterprise architecture
- Federated
- Federated identity
- Federated learning
- Federation
- Feed additives