| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Rahanjan | city | Semnan | Iran | 36.26 | 54.77 | 4189 | 298 |
| Rahimabad | city | Semnan | Iran | 36.68 | 56.72 | 3579 | 1631 |
| Rahimabad | city | Semnan | Iran | 36.35 | 55.43 | 4612 | 298 |
| Rahmaneh | city | Semnan | Iran | 35.84 | 53.30 | 7549 | 3763 |
| Rahmatabad | city | Semnan | Iran | 35.73 | 53.62 | 5869 | 447 |
| Rahmatabad | city | Semnan | Iran | 36.52 | 55.89 | 3461 | 298 |
| Rahmatabad Kalateh-ye Anaraki Nejafi | city | Semnan | Iran | 35.48 | 53.39 | 3349 | 3537 |
| Raja'i | city | Semnan | Iran | 36.06 | 55.87 | 3487 | 298 |
| Rajā’ī | city | Semnan | Iran | 36.06 | 55.87 | 3487 | 298 |
| Raman Kuh | city | Semnan | Iran | 35.93 | 53.50 | 7549 | 7279 |
| Ramandeh Kuh | city | Semnan | Iran | 35.93 | 53.50 | 7549 | 7279 |
| Ramazan Qal`eh | city | Semnan | Iran | 35.21 | 52.56 | 2650 | 13388 |
| Ramaẕān Qal‘eh | city | Semnan | Iran | 35.21 | 52.56 | 2650 | 13388 |
| Ramaẕān Qarah | city | Semnan | Iran | 35.21 | 52.56 | 2650 | 13388 |
| Rameh-ye Pa'in | city | Semnan | Iran | 35.47 | 52.70 | 6213 | 2086 |
| Raqan | city | Semnan | Iran | 35.54 | 56.74 | 5042 | 298 |
| Rash Kashteh | city | Semnan | Iran | 36.38 | 54.06 | 6709 | 555 |
| Rashm | city | Semnan | Iran | 35.28 | 54.49 | 4389 | 298 |
| Rashmeh | city | Semnan | Iran | 35.16 | 52.41 | 2755 | 13346 |
| Rasm-e Rudbar | city | Semnan | Iran | 35.97 | 53.58 | 7053 | 8195 |
| Ravanabad | city | Semnan | Iran | 36.53 | 54.99 | 5029 | 14285 |
| Ravāneh Raḩmāneh | city | Semnan | Iran | 35.83 | 53.32 | 9422 | 5045 |
| Razeh | city | Semnan | Iran | 35.58 | 55.27 | 4189 | 298 |
| Razgar | city | Semnan | Iran | 36.58 | 55.07 | 4484 | 298 |
| Razmgah | city | Semnan | Iran | 36.40 | 54.51 | 6774 | 590 |
| Raznu | city | Semnan | Iran | 36.32 | 54.58 | 5124 | 298 |
| Razveh | city | Semnan | Iran | 35.58 | 55.27 | 4189 | 298 |
| Raḩmāneh | city | Semnan | Iran | 35.83 | 53.32 | 9422 | 5045 |
| Raẕīābād | city | Semnan | Iran | 35.79 | 53.77 | 6105 | 447 |
| Raẕīābād | city | Semnan | Iran | 36.12 | 54.21 | 4189 | 298 |
| Reshm | city | Semnan | Iran | 35.28 | 54.49 | 4389 | 298 |
| Reshm | city | Semnan | Iran | 35.20 | 54.49 | 2877 | 298 |
| Reshmeh | city | Semnan | Iran | 35.16 | 52.41 | 2755 | 13346 |
| Rey | city | Semnan | Iran | 35.66 | 56.61 | 4360 | 298 |
| Reyābād | city | Semnan | Iran | 36.70 | 55.81 | 3366 | 298 |
| Rezaabad | city | Semnan | Iran | 35.94 | 56.68 | 3349 | 298 |
| Rezaabad | city | Semnan | Iran | 35.88 | 53.52 | 6748 | 3116 |
| Rezaabad | city | Semnan | Iran | 35.75 | 53.57 | 6771 | 447 |
| Rezaabad | city | Semnan | Iran | 35.65 | 53.75 | 5869 | 447 |
| Rezaabad-e Pa'in | city | Semnan | Iran | 35.88 | 53.52 | 6748 | 3116 |
| Rezveh | city | Semnan | Iran | 35.58 | 55.27 | 4189 | 298 |
| Reẕvān | city | Semnan | Iran | 37.18 | 55.80 | 5029 | 298 |
| Reẕvānābād | city | Semnan | Iran | 36.51 | 55.06 | 4393 | 15139 |
| Reẕāābād | city | Semnan | Iran | 36.35 | 54.93 | 4251 | 27417 |
| Reẕāābād | city | Semnan | Iran | 35.81 | 54.10 | 5869 | 298 |
| Reẕāābād | city | Semnan | Iran | 35.98 | 54.36 | 3438 | 298 |
| Reẕāābād-e Pā’īn | city | Semnan | Iran | 35.88 | 53.52 | 6748 | 3116 |
| Rigan | city | Semnan | Iran | 35.19 | 52.39 | 2828 | 18888 |
| Rion | city | Semnan | Iran | 35.76 | 53.65 | 6066 | 447 |
| Rishm | city | Semnan | Iran | 35.28 | 54.49 | 4389 | 298 |
| Rishmeh | city | Semnan | Iran | 35.16 | 52.41 | 2755 | 13346 |
| Risu | city | Semnan | Iran | 36.55 | 55.80 | 3349 | 298 |
| Riābād | city | Semnan | Iran | 36.70 | 55.81 | 3366 | 298 |
| Roba`i | city | Semnan | Iran | 35.38 | 54.47 | 5869 | 298 |
| Robat Soltan | city | Semnan | Iran | 36.20 | 54.75 | 3651 | 298 |
| Robāţ | city | Semnan | Iran | 36.37 | 54.02 | 6791 | 972 |
| Robāţ-e Bālā | city | Semnan | Iran | 36.38 | 54.03 | 6709 | 995 |
| Robāţ-e Zang | city | Semnan | Iran | 35.53 | 56.82 | 4189 | 298 |
| Robā‘ī | city | Semnan | Iran | 35.38 | 54.47 | 5869 | 298 |
| Roknabad | city | Semnan | Iran | 35.53 | 53.42 | 3520 | 13964 |
| Rostam Rudbar | city | Semnan | Iran | 35.97 | 53.58 | 7053 | 8195 |
| Rostamabad | city | Semnan | Iran | 35.20 | 52.49 | 2759 | 21422 |
| Rostamabad | city | Semnan | Iran | 35.20 | 52.50 | 2821 | 20948 |
| Rowyān | city | Semnan | Iran | 35.76 | 53.65 | 6066 | 447 |
| Rudbarak | city | Semnan | Iran | 36.05 | 53.56 | 5869 | 8195 |
| Runjen | city | Semnan | Iran | 36.34 | 54.23 | 6709 | 298 |
| Rusta-ye Asad | city | Semnan | Iran | 36.39 | 55.56 | 4189 | 298 |
| Rustamabad | city | Semnan | Iran | 35.20 | 52.49 | 2759 | 21422 |
| Ruyan | city | Semnan | Iran | 36.35 | 55.00 | 4189 | 32916 |
| Ruyan | city | Semnan | Iran | 35.76 | 53.65 | 6066 | 447 |
| Ruyan Qanat | city | Semnan | Iran | 35.76 | 53.65 | 6066 | 447 |
| Rāh Band | city | Semnan | Iran | 35.70 | 53.35 | 5242 | 17138 |
| Rāmeh Darreh | city | Semnan | Iran | 35.46 | 52.79 | 7549 | 2086 |
| Rāmeh-ye Bālā | city | Semnan | Iran | 35.48 | 52.73 | 7549 | 2086 |
| Rāmeh-ye Pā’īn | city | Semnan | Iran | 35.47 | 52.70 | 6213 | 2086 |
| Rīg Tappeh | city | Semnan | Iran | 35.36 | 52.77 | 4468 | 1012 |
| Rīg Āb | city | Semnan | Iran | 35.77 | 53.45 | 7549 | 3362 |
| Rīkān | city | Semnan | Iran | 35.19 | 52.39 | 2828 | 18888 |
| Rīz Sar | city | Semnan | Iran | 35.99 | 53.27 | 8628 | 7494 |
| Rūdbār | city | Semnan | Iran | 35.89 | 53.14 | 5029 | 2484 |
| Rūdbār | city | Semnan | Iran | 36.05 | 53.56 | 5869 | 8195 |
| Rūmeh | city | Semnan | Iran | 36.12 | 53.90 | 6709 | 1289 |
| Rūmenān | city | Semnan | Iran | 36.00 | 54.24 | 3710 | 298 |
| Rūstā-ye Enqelāb | city | Semnan | Iran | 36.31 | 54.91 | 4189 | 6570 |