| LOA.P | L1 Capital Corp | TSX Venture | Delisted |
| DDS | Labopharm Inc. | TSX | Active |
| LIM | Labrador Iron Hldg J | TSX | Active |
| LIF.UN | Labrador Iron Ore Un | TSX | Active |
| LTX | Labrador Technologies Inc . | TSX Venture | Active |
| LRI | LAB Research Inc. | TSX | Active |
| LCO.H | Lagasco Corp. | TSX Venture | Delisted |
| LK | Lakeland Resources Inc | TSX Venture | Active |
| LSG | Lake Shore Gold J | TSX | Active |
| LS | Lakeside Steel Inc. | TSX Venture | Active |
| LHR.DB.C | Lakeview Hotel Real Estate Investment Trust 6.5 % db sr C | TSX Venture | Active |
| LHR.DB.D | Lakeview Hotel Real Estate Investment Trust 8.5% sr D cv | TSX Venture | Active |
| LHR.DB | Lakeview Hotel Real Estate Investment Trust db ex 20jun12 | TSX Venture | Active |
| LHR.UN | Lakeview Hotel Real Estate Investment Trust Units A | TSX Venture | Active |
| LKW | Lakewood Mining Co. Ltd. | TSX Venture | Active |
| LMA | La Mancha Resource J | TSX | Active |
| LDI | Landdrill International Inc. | TSX Venture | Active |
| LAN | Landen Capital Corp | TSX Venture | Delisted |
| LAE.H | Lander Energy Corporation | TSX Venture | Active |
| LAE.P | Lander Energy Corporation | TSX Venture | Delisted |
| LST.H | Landmark Global Financial Corporation | TSX Venture | Active |
| LPI.H | Landstar Properties Inc. | TSX Venture | Suspended |
| LRT.NT | Lanesborough 9%Bnd J | TSX | Active |
| LRT.DB.F | Lanesborough SerF Db | TSX | Active |
| LRT.DB.G | Lanesborough SerG Db | TSX | Active |
| LRT.UN | Lanesborough Tr Un J | TSX | Active |
| LRT.WT | Lanesborough Tr Wt J | TSX | Active |
| LAQ | La Quinta Resources Corporation | TSX Venture | Active |
| LRA | Lara Exploration Ltd. | TSX Venture | Active |
| LAM | Laramide Resources J | TSX | Active |
| LGO | Largo Resources Ltd. | TSX Venture | Active |
| LE | Lariat Energy Ltd. | TSX Venture | Active |
| LAS.A | Lassonde Ind Cl A SV | TSX | Active |
| LVH | Las Vegas From Home.Com Entertainment Inc. | TSX Venture | Active |
| LRG | Lateegra Gold Corp | TSX Venture | Active |
| LAT | Latin American Minerals Inc. | TSX Venture | Active |
| LB | Laurentian Bk of Can | TSX | Active |
| LB.PR.E | Laurentian Bk Pr 10 | TSX | Active |
| LB.PR.D | Laurentian Bk Pr 9 | TSX | Active |
| LGF | Laurentian Goldfields Ltd | TSX Venture | Active |
| LME | Laurion Mineral Exploration Inc | TSX Venture | Active |
| CBF.UN | Lazard Glbl Conv Bnd | TSX | Active |
| LEA | Leader Energy Services Ltd | TSX Venture | Active |
| LEB | LeBoldus Capital Inc | TSX Venture | Active |
| LEB.P | LeBoldus Capital Inc | TSX Venture | Delisted |