China 
Africa 
- Giant cell arteritis
- Giant cell tumor of bone
- Giant condyloma acuminatum
- Giant papillary conjunctivitis
- Giant-cell fibroblastoma
- Giant-cell tumor of bone
- Giardia
- Giardia intestinalis
- Giardiasis
- Gibberellic acid
- Gibberellin
- Gibbon ape leukemia virus
- Gibbus deformity
- Giemsa stain
- Gifts
- Gigantism
- Gigantocellular reticular nucleus
- Giggle incontinence
- Gilbert's syndrome
- Gilles de la Tourette syndrome
- Gills
- Gilteritinib
- Ginger
- Gingerol
- Gingipain
- Gingiva
- Gingival
- Gingival and periodontal pockets
- Gingival disease
- Gingival enlargement
- Gingival graft
- Gingival hyperplasia
- Gingival margin
- Gingival recession
- Gingival sulcus
- Gingival tissue
- Gingivectomy
- Gingivitis
- Gingivoplasty
- Gini coefficient
- Ginkgo
- Ginkgo biloba
- Ginkgolide
- Ginseng
- Gintonin
- Gitelman syndrome
- Gla domains
- Glabella
- Glabrene
- Glabrous skin
- Gladius
- Gland
- Glanders
- Glandular
- Glandular fever
- Glandular metaplasia
- Glans
- Glans penis
- Glanuloplasty
- Glanzmann's thrombasthenia
- Glare
- Glasdegib
- Glasgow Coma Scale
- Glasgow Outcome Scale
- Glasgow-Blatchford score
- Glass ceramic
- Glass fiber
- Glass fibre
- Glass ionomer
- Glass ionomer cement
- Glass knife
- Glass rod
- Glass transition
- Glass transition temperature
- Glass tubes
- Glass-ionomer cement
- Glasses
- Glassy carbon
- Glassy cell carcinoma
- Glatiramer acetate
- Glaucarubin
- Glaucine
- Glaucoma
- Glaucoma medication
- Glaucoma surgery
- Gleason score
- Glecaprevir
- Glembatumumab vedotin
- Glenn procedure
- Glenohumeral joint
- Glenohumeral ligament
- Glenoid
- Glenoid cavity
- Glenoid labrum
- Gli1
- Gli2
- Gli3
- Glia limitans
- Gliadin
- Glial cell line-derived neurotrophic factor
- Glial cells
- Glial scar
- Glial tumor
- Glibenclamide
- Gliclazide
- Gliding motility
- Glimepiride
- Glioblast
- Glioblastoma
- Glioblastoma multiforme
- Gliogenesis
- Glioma
- Gliomatosis cerebri
- Gliosarcoma
- Gliosis
- Gliotoxin
- Glipizide
- Gliquidone
- Global Acute Malnutrition
- Global Harmonization Task Force
- Global Hunger Index
- Global Influenza Surveillance and Response System
- Global aphasia
- Global distance test
- Global mental health
- Globe rupture
- Globin
- Globoid cell leukodystrophy
- Globoside
- Globotriaosylceramide
- Globozoospermia
- Globular proteins
- Globulin
- Globulins
- Globus pharyngis
- Glomerular
- Glomerular basement membrane
- Glomerular hyperfiltration
- Glomerulation
- Glomeruli
- Glomeruloid hemangioma
- Glomerulonephritis
- Glomerulopathy
- Glomerulosclerosis
- Glomerulus
- Glomus body
- Glomus tumor
- Glossectomy
- Glossitis
- Glossodynia