- Facial
- Facial electromyography
- Facial expression
- Facial hair
- Facial muscles
- Facial nerve
- Facial nerve paralysis
- Facial paralysis
- Facial recognition
- Facial skeleton
- Facial symmetry
- Facies
- Facilitation
- Facility location problem
- Facility management
- Facing
- Factor analysis
- Factor endowment
- Factor graphs
- Factor of safety
- Factor system
- Factorial
- Factorial experiment
- Factoring
- Factorization
- Factors of production
- Factory
- Factory method
- Factory system
- Facultative
- Facultative lagoon
- Facultatively anaerobic
- Fade
- Fading
- Fading distribution
- Fail-safe
- Failover
- Failure Mode and Effects Analysis
- Failure analysis
- Failure causes
- Failure detector
- Failure mode
- Failure rate
- Fair data
- Fair queuing
- Faithful representation
- Falciform ligament
- Fall cone test
- Fall line
- Fall prevention
- Fall protection
- Fall time
- Fallacy
- Falling weight deflectometer
- Fallopian tube
- Falls in older adults
- False alarms
- False brinelling
- False color
- False dichotomy
- False diffusion
- False neurotransmitter
- False positive rate
- False positives
- False premise
- 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
- 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 limit
- Fatigue test
- Fatigue testing
- Fatty acid amides
- Fatty acid desaturase
- Fatty acid esters
- Fatty acid metabolism
- Fatty acid methyl ester
- Fatty acid synthase