| Spectrum Dome(expression, name, volcano, geology, north) |
| Spectrum Range(expression, name, volcano, geology, north) |
| Sphinx Dome(expression, name, volcano, geology, north) |
| Storm Cone(expression, name, volcano, geology, north) |
| Sutil Island(expression, name, volcano, geology, geohistory) |
| Swinton Creek Volcano(expression, name, volcano, geology, north) |
| Tadeda Centre(expression, name, volcano, geology, north) |
| Tadekho Hill(expression, name, volcano, geology, north) |
| Tennena Cone(expression, name, volcano, geology, north) |
| Thaw Hill(expression, name, volcano, geology, north) |
| Tom MacKay Creek Cone(expression, name, volcano, geology, north) |
| Toozaza Peak(expression, name, volcano, geology, north) |
| Trapa-Trapa Formation(expression, name, volcano, geology, geohistory) |
| Triangle Dome(expression, name, volcano, geology, north) |
| Triplex Cone(expression, name, volcano, geology, north) |
| Tseax Cone(expression, name, volcano, geology, north) |
| Tsekone Ridge(expression, name, volcano, geology, north) |
| Tutsingale Mountain(expression, name, volcano, geology, north) |
| Tuya Butte(expression, name, volcano, geology, north) |
| Twin Cone(expression, name, volcano, geology, north) |