L
- L'Amable
- L'Ange-Gardien
- L'Orignal
- La Passe
- La Renouche
- La Rue Mills
- La Salette
- La Vallee
- Lac-Sainte-Thérèse
- Lac La Croix
- Lac Seul
- Laclu
- Lady Bank
- Ladysmith
- Lafontaine
- Lafontaine Beach
- Laggan
- Lagoon City
- Laird
- Lake Bernard
- Lake Charles
- Lake Clear
- Lake Dalrymple
- Lake Dore
- Lake Helen
- Lake Huron Highland
- Lake Joseph
- Lake Morningstar
- Lake On The Mountain
- Lake Opinicon
- Lake Rosalind
- Lake St. Peter
- Lake Traverse
- Lake Valley Grove
- Lakefield
- Lakehurst
- Lakelet
- Lakeport
- Lakeshore
- Lakeside, Kanata, Ontario; Lakeside, Kenora District, Ontario; Lakeside, Oxford County, Ontario
- Lambeth, Middlesex County
- Lambeth, Oxford County
- Lambton Shores
- Lamlash
- Lammermoor
- Lanark
- Lancaster
- Lancelot
- Landerkin
- Langford
- Langstaff
- Langton
- Lansdowne
- Larder Lake
- LaSalle
- Laskay
- Latchford
- Laurel
- Laurel Station
- Lauriston
- Lavant
- Layton
- Leamington
- Leaside
- Leaskdale
- Leeburn
- Leeds
- Lefaivre
- Lefroy
- Legacy
- Legatt
- Legge
- Lehighs Corners
- Leith
- Leitrim
- Lemieux
- Letterbreen
- Levack
- Lewisham
- Lighthouse Beach
- Lillies
- Lily Oak
- Limehouse
- Limerick
- Limoges
- Lincoln
- Linden Bank
- Lindenwood
- Lindsay
- Links Mills
- Linton
- Linwood
- Lion's Head
- Lisle
- Listowel
- Little Britain
- Little Current
- Little Germany, Grey County
- Little Germany, Northumberland County
- Little Longlac
- Little Rapids
- Lively
- Living Springs
- Lloyd
- Lloydtown
- Lobo
- Lochalsh, Algoma District
- Lochalsh, Huron County
- Lochwinnoch
- Lockerby
- Locksley
- Logan
- Lombardy
- Londesborough
- London
- Long Bay
- Long Beach, Kawartha Lakes
- Long Beach, Niagara Regional Municipality
- Long Branch
- Long Lake, Frontenac County
- Long Lake, Thunder Bay District
- Longlac
- Longford Mills
- Long Point
- Long Sault
- Longwood
- Lords Mills
- Lorimer Lake
- Lorne Park
- Lorneville
- Lorraine
- Lorreto
- Lost Channel, Hastings County
- Lost Channel, Parry Sound District
- Louise
- Lowbanks
- Low Bush River
- Lower Stafford
- Lowther
- Lucan
- Lucas
- Lucknow
- Ludgate
- Lueck Mill
- Luton
- Lyn
- Lyndale
- Lynden
- Lyndhurst
- Lynedoch
- Lynhurst
- Lynnville
- Lyons
Read more about this topic: List Of Communities In Ontario