China 
Africa 
- Forward genetics
- Forward head posture
- Forward scatter
- Fosamprenavir
- Fosaprepitant
- Foscarnet
- Fosfomycin
- Fosinopril
- Fosmidomycin
- Fosphenytoin
- Fospropofol
- Fosravuconazole
- Fossa ovalis
- Fostamatinib
- Fostemsavir
- Foster Kennedy Syndrome
- Fouling
- Founder effect
- Four Score
- Four corner fusion
- Four tones
- Fournier gangrene
- Fourth heart sound
- Fourth nerve palsy
- Fourth ventricle
- Fovea centralis
- Foveal
- Foveal avascular zone
- Foveola
- Foville's syndrome
- Fowler's position
- Fowler's syndrome
- Fox Fordyce disease
- Fox-Fordyce disease
- Foxp3
- Fraction of inspired oxygen
- Fractional anisotropy
- Fractional distillation
- Fractional excretion of sodium
- Fractional factorial design
- Fractionation
- Fracture healing
- Fracture reduction
- Fractures
- Fragaria
- Fragaria vesca
- Fragile X syndrome
- Fragile sites
- Fragility fractures
- Fragilysin
- Fragment antigen binding
- Fragment-based lead discovery
- Fragmentation
- Frailty
- Frailty Index
- Frailty index
- Frailty syndrome
- Frameshift mutations
- Framework region
- Framing bias
- Framing effect
- Framingham Risk Score
- Francisella
- Francisella tularensis
- Frank-Starling law
- Frank-Ter Haar syndrome
- Frankincense
- Fraser syndrome
- Frasier syndrome
- Frataxin
- Fraternal twins
- Fraxel
- Fraxinus
- Freckles
- Free Androgen Index
- Free Fatty Acid Receptor 3
- Free Induction Decay
- Free association
- Free base
- Free electron lasers
- Free fatty acid receptor
- Free fatty acids
- Free flap breast reconstruction
- Free gingival graft
- Free nerve endings
- Free recall
- Free water clearance
- Free-flow electrophoresis
- Free-radical theory of aging
- FreeSurfer
- Freeman Sheldon Syndrome
- Freeman-Sheldon syndrome
- Freeze drying
- Freezing behavior
- Fregoli delusion
- Fremanezumab
- Fremitus
- French kiss
- French paradox
- French–American–British classification
- Frenectomy
- Frenuloplasty
- Frenulum
- Frenzel goggles
- Frequency following response
- Frequency histogram
- Frequent urination
- Fresh frozen plasma
- Fresh gas flow
- Freshman 15
- Fresolimumab
- Freudian slips
- Freunds adjuvant
- Frey's syndrome
- Friability
- Fricative
- Friedelin
- Friedman test
- Friedreich's ataxia
- Frigidity
- Frizzled
- Frizzled-2
- Frizzled-8
- Froin's syndrome
- Frontal Assessment Battery
- Frontal assessment battery
- Frontal bone
- Frontal bossing
- Frontal cortex
- Frontal eminence
- Frontal eye field
- Frontal eye fields
- Frontal fibrosing alopecia
- Frontal gyri
- Frontal gyrus
- Frontal lobe
- Frontal lobe epilepsy
- Frontal lobe injury
- Frontal nerve
- Frontal process
- Frontal process of maxilla
- Frontal release sign
- Frontal release signs
- Frontal sinus
- Frontal suture
- Frontalis muscle
- Frontoethmoidal suture
- Frontonasal duct
- Frontonasal dysplasia
- Frontotemporal dementia