| Sheep Track Pumice(expression, volcano, geology, province) |
| Sidas Cone(expression, volcano, geology, province) |
| Sixty Mile(expression, volcano, geology, province) |
| Sleet Cone(expression, volcano, geology, province) |
| Snippaker Creek Cone(expression, volcano, geology, province) |
| Snowshoe Lava Field(expression, volcano, geology, province) |
| Source Hill(expression, volcano, geology, province) |
| South Tuya(expression, volcano, geology, province) |
| Spectrum Dome(expression, volcano, geology, province) |
| Spectrum Range(expression, volcano, geology, province) |
| Sphinx Dome(expression, volcano, geology, province) |
| Storm Cone(expression, volcano, geology, province) |
| Swinton Creek Volcano(expression, volcano, geology, province) |
| Tadeda Centre(expression, volcano, geology, province) |
| Tadekho Hill(expression, volcano, geology, province) |
| Tennena Cone(expression, volcano, geology, province) |
| Thaw Hill(expression, volcano, geology, province) |
| Thumb(noun, name, volcano, geology) |
| Tom MacKay Creek Cone(expression, volcano, geology, province) |
| Toozaza Peak(expression, volcano, geology, province) |