Cities and Communities in Southern Ontario
(check also Northern Ontario)
| L'Amable | Langton | Linwood | Long Sault |
| L'Ange-Gardien | Lansdowne | Lion's Head | Longford |
| L'Orignal | LaPasse | Lisbon | Loretto |
| Lafontaine | LaSalette | Lisle | Loring |
| Laggan | LaSalle | Listowel | Lorne Beach |
| Lagoon City | Lasswade | Little Britain | Lorneville |
| Lake Dalrymple | Latchford Bridge | Little Current | Lost Channel |
| Lake Huron Highland | Laurel | Little Hawk Lake | Louisville |
| Lake Saint Peter | Lavant | Little Lake | Lowbanks |
| Lakefield | Lavigne | Little Rapids | Lowville |
| Lakehurst | Leamington | Lively | Lucan |
| Lakelet | Leaskdale | Lloydtown | Lucasville |
| Lakeport | Lefaivre | Lobo | Lucknow |
| Lakeshore-Rochester | Lefroy | Lochiel | Lunenburg |
| Lakeside | Leith | Lochlin | Lurgan Beach |
| Lakeside Beach | Leitrim | Lombardy | Luton |
| Lakeview Heights | Lighthouse Cove | Londesborough | Lyn |
| Lambeth | Limehouse | London | Lynden |
| Lanark | Limoges | Long Bay | Lyndhurst |
| Lancaster | Lincoln | Long Beach (Niagara) | Lynedoch |
| Lang | Linden Beach | Long Beach (Victoria) | Lynnwood |
| Langstaff | Lindsay | Long Point | Lyons |