| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Thambarvellir | city | Iceland | 65.45 | -21.38 | 685 | 0 | |
| Thidhriksvellir | city | Iceland | 65.67 | -21.77 | 498 | 102 | |
| Thorp | city | Iceland | 65.63 | -21.48 | 390 | 7 | |
| Thorpar | city | Iceland | 65.63 | -21.48 | 390 | 7 | |
| Thorustadhir | city | Iceland | 65.43 | -21.47 | 679 | 0 | |
| Threstbakki | city | Iceland | 65.32 | -21.20 | 0 | 0 | |
| Thrudhardalur | city | Iceland | 65.53 | -21.48 | 1158 | 0 | |
| Tindur | city | Iceland | 65.60 | -21.63 | 839 | 0 | |
| Tröllatunga | city | Iceland | 65.63 | -21.68 | 301 | 61 | |
| Tungugröf | city | Iceland | 65.65 | -21.67 | 62 | 145 |