G
- Gads Hill
- Gagnon
- Galbraith
- Galesburg
- Galetta
- Gallimere Beach
- Galingertown
- Galts Corner
- Gambridge
- Gamebridge Beach
- Gameland
- Gananoque
- Gananoque Junction
- Gannon Village
- Garden River
- Gardiner
- Garson
- Georgetown
- Georgian Heights
- Georgian Highlands
- Georgian Inlet
- Georgian Sands Beach
- Geraldton
- German Mills
- Gilbertville
- Gibraltar
- Gibson
- Gilchrist Bay
- Gildale
- Gilford
- Gillies Hill
- Gilmour
- Glanmire
- Glascott
- Glasgow
- Glastonbury
- Glen
- Glen Buell
- Glenburn
- Glenburnie
- Glen Cross
- Glenfield
- Glen Huron
- Glencairn
- Glencoe
- Glenelg Centre
- Glen Major
- Glen Nevis
- Glen Oak
- Glenora
- Glenpayne
- Glen Robertson
- Glenshee
- Glenview
- Glenville
- Glen Williams
- Gloucester
- Goderich
- Godfrey
- Gogama
- Golden Lake
- Goldfield
- Gooderham
- Gordon
- Gore Bay
- Gores Landing
- Gormley
- Gorrie
- Goshen
- Gotham
- Goulais River
- Gouldbourn
- Government Road
- Gowanstown
- Gowganda
- Grafton
- Grand Bend
- Grand Desert
- Granger
- Grant
- Granthurst
- Graphite
- Grasmere
- Grattan
- Gravel Hill
- Gravenhurst
- Gray's Beach
- Greater Toronto, Ontario
- Greely
- Greenbush
- Green's Corners
- Green Lane
- Greenfield
- Greenock
- Green River
- Green Valley
- Greenview
- Greensborough
- Greenstone
- Greensville
- Greenway
- Greenwood, Durham Regional Municipality
- Greenwood, Huron County
- Greenwood, Renfrew County
- Grimsby
- Grimsthorpe
- Grimston
- Gros Cap
- Guelph
- Guelph/Eramosa
- Guerin
- Gunter
Read more about this topic: List Of Communities In Ontario