China 
Africa 
Japan 
- Cryosupernatant
- Cryosurgery
- Cryotherapy
- Cryptic relatedness
- Cryptitis
- Cryptochrome
- Cryptococcal meningitis
- Cryptococcosis
- Cryptococcus
- Cryptococcus gattii
- Cryptococcus neoformans
- Cryptogenic organizing pneumonia
- Cryptophthalmos
- Cryptorchidism
- Cryptosporidiosis
- Cryptosporidium
- Cryptosporidium hominis
- Cryptosporidium muris
- Cryptosporidium parvum
- Cryptoxanthin
- Crystal arthropathy
- Crystal monochromator
- Crystal structure
- Crystal violet
- Crystallin
- Crystallization
- Crystallography
- Crystalloids
- Crystalluria
- Csf2ra
- Ctenocephalides felis
- Cubital fossa
- Cubital tunnel
- Cubital tunnel syndrome
- Cubitus interruptus
- Cubitus valgus
- Cubitus varus
- Cucumber mosaic virus
- Cucurbita pepo
- Cucurbitacin
- Cucurbitane
- Cue reactivity
- Cuffitis
- Culdocentesis
- Culex
- Culex tarsalis
- Culex tritaeniorhynchus
- Culicidae
- Cullen's sign
- Cullin
- Culmen
- Cultivation
- Cultural bias
- Cultural competence
- Cultural competency training
- Cultural differences
- Cultural identity
- Cultural mediation
- Cultural phenomenon
- Cultural psychiatry
- Cultural psychology
- Cultural values
- Culture bound syndromes
- Culture conversion
- Culture media
- Culture of fear
- Culture-bound syndromes
- Cumene
- Cumin
- Cumulative dose
- Cumulative incidence
- Cumulative trauma disorder
- Cumulus cells
- Cumulus oophorus
- Cuneate fasciculus
- Cuneate nucleus
- Cuneiform
- Cuneiform bone
- Cuneiform cartilage
- Cuneiform cartilages
- Cuneus
- Cunnilingus
- Cunninghamella
- Cup to disc ratio
- Cup-to-disc ratio
- Cupid's bow
- Cupin superfamily
- Cupping
- Cupping therapy
- Cupriavidus
- Cupriavidus metallidurans
- Cupriavidus necator
- Cupric chloride
- Curare
- Curative care
- Curcuma
- Curcuma longa
- Curcuma xanthorrhiza
- Curcuma zedoaria
- Curcumin
- Curcuminoids
- Curd
- Curdlan
- Cure
- Cured meats
- Curettage
- Curette
- Curing
- Curiosity
- Curli
- Currants
- Currarino syndrome
- Current clamps
- Current good tissue practices
- Current of injury
- Curve of Spee
- Cuscohygrine
- Cushing reflex
- Cushing syndrome
- Cushing's disease
- Cushing's syndrome
- Custard
- Cutaneous T-cell lymphoma
- Cutaneous diphtheria
- Cutaneous horn
- Cutaneous innervation
- Cutaneous larva migrans
- Cutaneous leishmaniasis
- Cutaneous lymphoma
- Cutaneous receptors
- Cutaneous vasculitis
- Cutibacterium acnes
- Cuticle
- Cuticular plate
- Cutis
- Cutis laxa
- Cutis marmorata
- Cutis marmorata telangiectatica congenita
- Cutting
- Cuvette
- CyTOF
- Cyan fluorescent protein
- Cyanate
- Cyanation
- Cyanic acid
- Cyanide
- Cyanide poisoning
- Cyanine
- Cyanine dyes
- Cyano groups