| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Thonglabakki | city | Iceland | 66.15 | -18.13 | 278 | 0 | |
| Thordharstadhir | city | Iceland | 65.63 | -17.80 | 1601 | 0 | |
| Thorisstadhir | city | Iceland | 65.78 | -18.08 | 68 | 84 | |
| Thoroddsstadhur | city | Iceland | 65.85 | -17.55 | 62 | 17 | |
| Thorsteinsstadhir | city | Iceland | 65.88 | -18.08 | 688 | 0 | |
| Thorvaldsstadhir | city | Iceland | 66.03 | -17.33 | 429 | 1703 | |
| Thufa | city | Iceland | 65.88 | -17.87 | 593 | 0 | |
| Thvera | city | Iceland | 65.73 | -17.25 | 469 | 122 | |
| Thvera | city | Iceland | 65.87 | -17.90 | 242 | 0 | |
| Thvera | city | Iceland | 65.92 | -17.30 | 561 | 0 | |
| Tindridhastadhir | city | Iceland | 66.13 | -18.10 | 13 | 0 | |
| Tindriðastaðir | city | Iceland | 66.13 | -18.10 | 13 | 0 | |
| Torfunes | city | Iceland | 65.83 | -17.55 | 62 | 38 | |
| Tunga | city | Iceland | 65.57 | -17.75 | 1292 | 0 | |
| Tungugerdhi | city | Iceland | 66.10 | -17.27 | 442 | 638 | |
| Tungugerði | city | Iceland | 66.10 | -17.27 | 442 | 638 |