| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Thachchankulam | city | North Eastern Province | Sri Lanka | 8.75 | 80.50 | 291 | 25188 |
| Thaddankulam | city | North Eastern Province | Sri Lanka | 8.70 | 80.33 | 154 | 8046 |
| Thaddankulam | city | North Eastern Province | Sri Lanka | 9.08 | 80.37 | 114 | 6219 |
| Thaddumunai | city | North Eastern Province | Sri Lanka | 8.12 | 81.42 | 3 | 14018 |
| Thadduvamkoddy | city | North Eastern Province | Sri Lanka | 9.50 | 80.42 | 13 | 8371 |
| Thadduvankoddy | city | North Eastern Province | Sri Lanka | 9.50 | 80.42 | 13 | 8371 |
| Thaiyiddi | city | North Eastern Province | Sri Lanka | 9.80 | 80.05 | 3 | 39118 |
| Thalankudah | city | North Eastern Province | Sri Lanka | 7.65 | 81.75 | 3 | 8583 |
| Thalavai | city | North Eastern Province | Sri Lanka | 7.80 | 81.62 | 13 | 26228 |
| Thalawai | city | North Eastern Province | Sri Lanka | 7.80 | 81.62 | 13 | 26228 |
| Thalayadimadu | city | North Eastern Province | Sri Lanka | 7.53 | 81.60 | 669 | 20569 |
| Thamaraikerni | city | North Eastern Province | Sri Lanka | 7.48 | 81.72 | 42 | 19989 |
| Thamarakerni | city | North Eastern Province | Sri Lanka | 7.48 | 81.72 | 42 | 19989 |
| Thamaravillu | city | North Eastern Province | Sri Lanka | 8.47 | 81.20 | 16 | 12747 |
| Thambiluvil | city | North Eastern Province | Sri Lanka | 7.13 | 81.85 | 16 | 5688 |
| Thampaddai | city | North Eastern Province | Sri Lanka | 7.17 | 81.85 | 16 | 12827 |
| Thampalai | city | North Eastern Province | Sri Lanka | 9.78 | 80.12 | 3 | 56574 |
| Thampalawattai | city | North Eastern Province | Sri Lanka | 7.47 | 81.75 | 3 | 20279 |
| Thanakkarukurachchi | city | North Eastern Province | Sri Lanka | 9.80 | 80.15 | 3 | 50691 |
| Thanankilappu | city | North Eastern Province | Sri Lanka | 9.63 | 80.15 | 3 | 41889 |
| Thankodai | city | North Eastern Province | Sri Lanka | 9.75 | 79.87 | 39 | 16359 |
| Thannamunai | city | North Eastern Province | Sri Lanka | 7.75 | 81.63 | 29 | 31739 |
| Thannipavilan Kudiyiruppu | city | North Eastern Province | Sri Lanka | 9.05 | 79.85 | 22 | 4715 |
| Tharakundu | city | North Eastern Province | Sri Lanka | 9.00 | 79.87 | 13 | 6817 |
| Tharmakundu | city | North Eastern Province | Sri Lanka | 9.58 | 79.82 | 36 | 14931 |
| Thatchchanthoppu | city | North Eastern Province | Sri Lanka | 9.65 | 80.10 | 3 | 46989 |
| Thattantotam | city | North Eastern Province | Sri Lanka | 9.55 | 80.43 | 3 | 19466 |
| Thayilan Kudiyiruppu | city | North Eastern Province | Sri Lanka | 9.07 | 79.85 | 16 | 4175 |
| Thekampuddi | city | North Eastern Province | Sri Lanka | 9.18 | 80.10 | 0 | 5250 |
| Thekkuluthu | city | North Eastern Province | Sri Lanka | 8.57 | 81.18 | 36 | 50371 |
| Thettapiddy | city | North Eastern Province | Sri Lanka | 9.18 | 80.10 | 0 | 5250 |
| Thewanpuddi | city | North Eastern Province | Sri Lanka | 9.18 | 80.10 | 0 | 5250 |
| Thiaveddavan | city | North Eastern Province | Sri Lanka | 7.92 | 81.50 | 16 | 22588 |
| Thikkam | city | North Eastern Province | Sri Lanka | 9.83 | 80.20 | 3 | 46517 |
| Thikkodai | city | North Eastern Province | Sri Lanka | 7.53 | 81.68 | 236 | 22527 |
| Thikkoddaimadu | city | North Eastern Province | Sri Lanka | 7.53 | 81.68 | 236 | 22527 |
| Thikkoddaimunmari | city | North Eastern Province | Sri Lanka | 7.52 | 81.68 | 232 | 22304 |
| Thimilamadam | city | North Eastern Province | Sri Lanka | 9.50 | 80.43 | 13 | 9765 |
| Thimilatheevu | city | North Eastern Province | Sri Lanka | 7.70 | 81.68 | 9 | 29173 |
| Thimilativu | city | North Eastern Province | Sri Lanka | 7.70 | 81.68 | 9 | 29173 |
| Thiraymadu | city | North Eastern Province | Sri Lanka | 7.97 | 81.48 | 19 | 20800 |
| Thirukethiswaram | city | North Eastern Province | Sri Lanka | 8.95 | 79.97 | 6 | 6735 |
| Thirukkaikuda | city | North Eastern Province | Sri Lanka | 8.53 | 81.18 | 3 | 32603 |
| Thirunelvely East | city | North Eastern Province | Sri Lanka | 9.68 | 80.03 | 3 | 48368 |
| Thirunelvely West | city | North Eastern Province | Sri Lanka | 9.68 | 80.02 | 3 | 47716 |
| Thiruvadinilayam | city | North Eastern Province | Sri Lanka | 9.77 | 79.93 | 29 | 32375 |
| Thoddakkadu | city | North Eastern Province | Sri Lanka | 8.98 | 79.88 | 6 | 5779 |
| Tholakaddy | city | North Eastern Province | Sri Lanka | 9.78 | 80.08 | 3 | 53824 |
| Thona | city | North Eastern Province | Sri Lanka | 7.62 | 81.75 | 3 | 12652 |
| Thondaimanaru | city | North Eastern Province | Sri Lanka | 9.82 | 80.13 | 3 | 34600 |
| Thoppu | city | North Eastern Province | Sri Lanka | 9.77 | 80.10 | 3 | 55839 |
| Thottama | city | North Eastern Province | Sri Lanka | 7.12 | 81.68 | 524 | 14304 |
| Thukkuvittan | city | North Eastern Province | Sri Lanka | 7.93 | 81.53 | 3 | 17795 |
| Thullukudi Kudiyiruppu | city | North Eastern Province | Sri Lanka | 9.08 | 79.80 | 29 | 4672 |
| Thumpalai | city | North Eastern Province | Sri Lanka | 9.82 | 80.25 | 3 | 32368 |
| Thumpalanchola | city | North Eastern Province | Sri Lanka | 7.62 | 81.50 | 213 | 23070 |
| Thumpalancholai | city | North Eastern Province | Sri Lanka | 7.62 | 81.50 | 213 | 23070 |
| Thumpankerni | city | North Eastern Province | Sri Lanka | 7.53 | 81.72 | 101 | 21021 |
| Thumpankerni | city | North Eastern Province | Sri Lanka | 7.48 | 81.78 | 3 | 17967 |
| Thunavy | city | North Eastern Province | Sri Lanka | 9.72 | 79.97 | 19 | 49272 |
| Thunnalai North | city | North Eastern Province | Sri Lanka | 9.78 | 80.20 | 3 | 71743 |
| Thunnalai South | city | North Eastern Province | Sri Lanka | 9.77 | 80.22 | 3 | 66799 |
| Thuvarankerni | city | North Eastern Province | Sri Lanka | 8.90 | 79.97 | 9 | 8651 |