Cities and Communities in Southern Ontario
(check also Northern Ontario)
| Gads Hill | Glen Alda | Godfrey | Greater Napanee |
| Galetta | Glen Allan | Golden Lake | Greely |
| Gamebridge | Glen Becker | Golden Valley | Green Lane |
| Gananoque | Glen Cairn | Goldstone | Green River |
| Garden Hill | Glen Huron | Golspie | Green Valley |
| Garden Village | Glen Meyer | Gooderham | Greenbank |
| Gardenville | Glen Miller | Goodwood | Greenbush |
| Garnet | Glen Morris | Gordon Bay | Greenfield |
| Gasline | Glen Nevis | Gore Bay | Greenhurst-Thurstonia |
| Gelert | Glen Orchard | Gores Landing | Greenock |
| Georgetown | Glen Robertson | Gormley | Greens Corner |
| Georgian Beach | Glen Ross | Gorrie | Greensville |
| Georgina | Glen Tay | Gosport | Greenway |
| Georgina Island | Glen Walter | Gowanstown | Greenwood |
| Gesto | Glen Williams | Grafton | Griffith |
| Gilbertville | Glenarm | Grand Bend | Grimsby |
| Gilchrist Bay | Glenburnie | Grand Valley | Grimsby Beach |
| Gilford | Glencairn | Grande Pointe | Grimsthorpe |
| Gilmour | Glencoe | Granton | Guaytown |
| Gladstone | Glenmount | Grassie | Guelph |
| Glammis | Glenora | Grassmere | Guilds |
| Glanworth | Gloucester | Gravel Hill | Gunter |
| Glasgow Station | Gobles | Gravenhurst | Guthrie |
| Goderich |