| Stone PillarH2228 | Light | Fl.W. period 6s fl. 1.0s, ec. 5.0s | 10 | Cap-St-Ignace 20 km |
| Stonehaven WharfH1596 | Light | Fl.W. period 4s fl. 1.0s, ec. 3.0s | 10 | Bathurst 26 km |
| Stonehaven, breakwaterH1596.20 | Light | Fl.G. period 4s | 5 | Bathurst 26 km |
| Stoney Creek Channel Range Front Light | Light | F R | — | Amherstburg 24 km |
| Stoney Creek Channel Range Rear Light | Light | F R | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 1 | Buoy | — | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 2 | Buoy | — | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 3 | Buoy | — | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 4 | Buoy | — | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 5 | Buoy | — | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 6 | Buoy | — | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 7 | Buoy | — | — | Amherstburg 24 km |
| Stony Creek Channel Buoy 8 | Buoy | — | — | Amherstburg 24 km |
| Stony Island, breakwater, headH3787.41 | Light | Fl.G. period 3s fl. 1.0s, ec. 2.0s | — | Stoney Island 0 km |
| Stony Point Breakwater Light 4 | Light | Fl R 4s | 5 | Lacolle 12 km |
| Storehouse IslandH0623 | Light | Fl.W. period 6s fl. 1.0s, ec. 5.0s | 6 | Fogo 13 km |
| Story PointG5698.40 | Light | Fl.W. period 4s | 5 | Ocean Falls 37 km |
| Stovin Island Light 145 (C)H2750.00 | Light | Fl G 4s | — | Brockville 5 km |
| Straggling IslandsG5189 | Light | Fl.R. period 4s | 5 | Quatsino 8 km |
| Striae Islands, E. isletG5843 | Light | Fl.(3)W. period 12s fl. 0.5s, ec. 2.0s fl. 0.5s, ec. 2.0s fl. 0.5s, ec. 6.5s | 5 | Masset 10 km |
| Striae Islands, E. islet, Cook PointG5844 | Light | Fl.W. period 4s | 5 | Masset 24 km |
| Striae Islands, E. islet, Harbor entrance Range, frontG5842 | Light | F.Y. | 11 | Masset 4 km |
| Striae Islands, E. islet, Rooney PointG5843.20 | Light | Fl.R. period 6s fl. 0.5s, ec. 5.5s | 4 | Masset 1 km |
| Striae Islands, E. islet, Sloop IsletG5845 | Light | Fl.W. period 6s fl. 0.5s, ec. 5.5s | 5 | Masset 29 km |
| Striped IslandH0070.5 | Light | Fl.W. period 4s | 5 | Hopedale 39 km |
| Stuart Town, breakwaterH4140 | Light | Fl.W. period 4s | 6 | Deer Island 6 km |
| Sugar Island North Channel Buoy 13 | Buoy | — | — | Sault-Sainte-Marie 9 km |
| Sugar Island North Channel Buoy 15 | Buoy | — | — | Sault-Sainte-Marie 8 km |
| Sugar Island North Channel Buoy 5 | Buoy | — | — | Sault-Sainte-Marie 16 km |
| Sugar Island North Channel Buoy 7 | Buoy | — | — | Sault-Sainte-Marie 13 km |
| Sugar Island North Channel Buoy 8 | Buoy | — | — | Sault-Sainte-Marie 12 km |
| Sugar Island North Channel Buoy 9 | Buoy | — | — | Sault-Sainte-Marie 12 km |
| Sugar Island North Channel Lighted Buoy 6 | Buoy | — | — | Sault-Sainte-Marie 15 km |
| Sugar Island North Channel Lighted Buoy 6A | Buoy | Q R | 2.6 | Sault-Sainte-Marie 13 km |
| Suley Ann Cove FerryH0679.50 | Light | Fl.R. period 4s | 4 | Springdale 27 km |
| Summerford WharfH0651.60 | Light | Fl.R. period 3s | 4 | Twillingate 17 km |
| Summerside Outer Range, frontH1049 | Light | F.R. | 18 | Summerside 2 km |
| Summerside Outer Range, front, Rear, 430.3 meters 028°57' from frontH1049.1 | Light | F.R. | 18 | Summerside 2 km |
| Sunny Island, on rock, S. of islandG5682 | Light | Fl.W. period 4s | 5 | Ocean Falls 22 km |
| Surgeon IsletsG5629.40 | Light | Fl.R. period 4s | 4 | Alert Bay 35 km |
| Surveyor'S Island Light 43 | Light | Fl G 4s | 3.5 | Fort Frances 58 km |
| Susan RockG5714 | Light | Fl.W. period 6s fl. 0.5s, ec. 5.5s | 5 | Klemtu 35 km |
| Sutlej PointG5689 | Light | Fl.W. period 4s | 5 | Bella Coola 1 km |
| SW. Point, on extremityH1866 | Light | Fl.W. period 6s fl. 1.0s, ec. 5.0s | 8 | Port-Menier 72 km |
| Swale Rock, E. entrance to Sechart Channel, S. sideG5254 | Light | Fl.(3)W. period 12s fl. 0.5s, ec. 2.0s fl. 0.5s, ec. 2.0s fl. 0.5s, ec. 6.5s | 5 | Ucluelet 22 km |
| Swallow TailH4168 | Light | Oc.W. period 6s fl. 4.0s, ec. 2.0s | 12 | Grand Manan 9 km |
| Swan Creek Entrance Buoy 3 | Buoy | — | — | Amherstburg 18 km |
| Swan Creek Entrance Buoy 4 | Buoy | — | — | Amherstburg 18 km |
| Swan Creek Entrance Daybeacon 10 | Beacon | — | — | Amherstburg 19 km |
| Swan Creek Entrance Daybeacon 12 | Beacon | — | — | Amherstburg 19 km |