| Name | Town/City | Postal Code |
| LABOUREUR | Brampton | L6P 2E4 |
| Lake Land Meats & Farm Market | St. Catharines | L2R 6P7 |
| Lakelee Orchards | Jordan Station | L0R 1S0 |
| Lamb Lady Farm | Palgrave | L0N 1P0 |
| Laundry Farms | Beamsville | L0R 1B1 |
| Laurenssen's Farm and Greenhouses | Freelton | L0R 1K0 |
| Lawrence Finnie | Port Hope | L0A 1B0 |
| Lee Farms | Orono | L0B 1M0 |
| Legend Estates Winery | Beamsville | L0R 1B0 |
| Linden Lane Apiaries | King | L0G 1T0 |
| Linton's Vegetable Farm | Oshawa | L1H 7K4 |
| Lion's Head Farmers' Market | Northern Bruce Peninsula | N0H 1W0 |
| Little Rock Honey Farm | Tottenham | L0G 1W0 |
| Loffredo Fruit Farms | St. Catharines | L2R 6P9 |
| Lotus Valley Maple Company | Pontypool | L0A 1K0 |
| LOVE Garlic | Hillsburgh | N0B 1Z0 |
| Lunar Rhythm Gardens | Kawartha Lakes | L0B 1K0 |
| Lutz Orchard and Berry Farm | Hamilton | L0R 2B0 |
