| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Radhapuram | city | State of Tamil Nadu | India | 8.2666667 | 77.7 | 144 | 36779 |
| Raja Annamalaipuram | city | State of Tamil Nadu | India | 13.025 | 80.2575 | 39 | 2587813 |
| Rajakilpakkam | city | State of Tamil Nadu | India | 12.9194444 | 80.1697222 | 49 | 439230 |
| Rajamatam | city | State of Tamil Nadu | India | 10.3333333 | 79.35 | 3 | 45792 |
| Rajapalaiyam | city | State of Tamil Nadu | India | 9.45 | 77.5666667 | 725 | 92534 |
| Rajapalayam | city | State of Tamil Nadu | India | 9.45 | 77.5666667 | 725 | 92534 |
| Rajapuram | city | State of Tamil Nadu | India | 10.7666667 | 77.9 | 623 | 43649 |
| Rajasingamangalam | city | State of Tamil Nadu | India | 9.6666667 | 78.85 | 36 | 29670 |
| Ramanathapuram | city | State of Tamil Nadu | India | 9.3833333 | 78.8333333 | 6 | 49173 |
| Ramancheri | city | State of Tamil Nadu | India | 13.2 | 79.8 | 170 | 90982 |
| Ramanjeri | city | State of Tamil Nadu | India | 13.2 | 79.8 | 170 | 90982 |
| Ramanthapuram | city | State of Tamil Nadu | India | 9.3833333 | 78.8333333 | 6 | 49173 |
| Ramapuram | city | State of Tamil Nadu | India | 13.5166667 | 80.0833333 | 29 | 47956 |
| Ramaswamipatti | city | State of Tamil Nadu | India | 9.3833333 | 78.2666667 | 180 | 43462 |
| Ramesvaram | city | State of Tamil Nadu | India | 9.2833333 | 79.3 | 32 | 39778 |
| Rameswaram | city | State of Tamil Nadu | India | 9.2833333 | 79.3 | 32 | 39778 |
| Ramnad | city | State of Tamil Nadu | India | 9.3833333 | 78.8333333 | 6 | 49173 |
| Rangampettai | city | State of Tamil Nadu | India | 13 | 78.75 | 1532 | 58050 |
| Rangarajapuram | city | State of Tamil Nadu | India | 13.0105556 | 80.2325 | 52 | 3419566 |
| Ranipet | city | State of Tamil Nadu | India | 12.9333333 | 79.3333333 | 544 | 90703 |
| Ranippettai | city | State of Tamil Nadu | India | 12.9333333 | 79.3333333 | 544 | 90703 |
| Ranjangudi | city | State of Tamil Nadu | India | 11.3666667 | 78.9333333 | 354 | 40146 |
| Rasipur | city | State of Tamil Nadu | India | 11.4666667 | 78.1666667 | 807 | 54527 |
| Rasipuram | city | State of Tamil Nadu | India | 11.4666667 | 78.1666667 | 807 | 54527 |
| Rayakotta | city | State of Tamil Nadu | India | 12.5166667 | 78.05 | 2329 | 39361 |
| Rayakottai | city | State of Tamil Nadu | India | 12.5166667 | 78.05 | 2329 | 39361 |
| Rayapuram | city | State of Tamil Nadu | India | 13.1072222 | 80.2952778 | 36 | 1437375 |
| Reddipalaiyam | city | State of Tamil Nadu | India | 13.1077778 | 80.1205556 | 52 | 84733 |
| Reddipālaiyam | city | State of Tamil Nadu | India | 13.1077778 | 80.1205556 | 52 | 84733 |
| Riacotta | city | State of Tamil Nadu | India | 12.5166667 | 78.05 | 2329 | 39361 |
| Rishivandiyam | city | State of Tamil Nadu | India | 11.8166667 | 79.1 | 498 | 56131 |
| Rishivandryam | city | State of Tamil Nadu | India | 11.8166667 | 79.1 | 498 | 56131 |
| Royapettah | city | State of Tamil Nadu | India | 13.0505556 | 80.2641667 | 49 | 3409086 |
| Royapuram | city | State of Tamil Nadu | India | 13.1072222 | 80.2952778 | 36 | 1437375 |
| Rādhāpuram | city | State of Tamil Nadu | India | 8.2666667 | 77.7 | 144 | 36779 |
| Rājapuram | city | State of Tamil Nadu | India | 10.7666667 | 77.9 | 623 | 43649 |
| Rājapālaiyam | city | State of Tamil Nadu | India | 9.45 | 77.5666667 | 725 | 92534 |
| Rājāmātam | city | State of Tamil Nadu | India | 10.3333333 | 79.35 | 3 | 45792 |
| Rājāsingamangalam | city | State of Tamil Nadu | India | 9.6666667 | 78.85 | 36 | 29670 |
| Rāmancheri | city | State of Tamil Nadu | India | 13.2 | 79.8 | 170 | 90982 |
| Rāmanāthapuram | city | State of Tamil Nadu | India | 9.3833333 | 78.8333333 | 6 | 49173 |
| Rāmaswāmipatti | city | State of Tamil Nadu | India | 9.3833333 | 78.2666667 | 180 | 43462 |
| Rāmeswaram | city | State of Tamil Nadu | India | 9.2833333 | 79.3 | 32 | 39778 |
| Rāmāpuram | city | State of Tamil Nadu | India | 13.5166667 | 80.0833333 | 29 | 47956 |
| Rānipet | city | State of Tamil Nadu | India | 12.9333333 | 79.3333333 | 544 | 90703 |
| Rānippettai | city | State of Tamil Nadu | India | 12.9333333 | 79.3333333 | 544 | 90703 |
| Rāsipuram | city | State of Tamil Nadu | India | 11.4666667 | 78.1666667 | 807 | 54527 |
| Rāsīpur | city | State of Tamil Nadu | India | 11.4666667 | 78.1666667 | 807 | 54527 |
| Rāyakottai | city | State of Tamil Nadu | India | 12.5166667 | 78.05 | 2329 | 39361 |
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