| Language | Name | Code |
|---|---|---|
| Arabic | مدينة سمنان | ar |
| arz | سمنان | arz |
| Azerbaijani | Simnan | az |
| azb | سیمنان | azb |
| Belarusian | Семнан | be |
| be-tarask | Сэмнан | be-tarask |
| Bulgarian | Семнан | bg |
| Bengali | সিবু | bn |
| Catalan | Semnan | ca |
| Cebuano | Dakbayan sa Semnān | ceb |
| Central Kurdish | سمنان | ckb |
| Czech | Semnán | cs |
| Welsh | Semnān | cy |
| Danish | Semnan | da |
| German | Semnan | de |
| Modern Greek (1453-) | Σεμνάν | el |
| English | Semnan | en |
| Esperanto | Semnan | eo |
| Spanish | Semnán | es |
| Basque | Semnan | eu |
| Persian | سمنان | fa |
| Finnish | Semnan | fi |
| French | Semnan | fr |
| Irish | Semnan | ga |
| Gujarati | સેમનન | gu |
| Hebrew | סמנאן | he |
| Hindi | सेमनान | hi |
| Croatian | Semnan | hr |
| Hungarian | Szemnán | hu |
| Armenian | Սեմնան | hy |
| Indonesian | Semnan | id |
| Italian | Semnan | it |
| Japanese | セムナーン | ja |
| Kannada | ಸೆಮ್ನಾನ್ | kn |
| Korean | 셈난 | ko |
| Kashmiri | سمنان | ks |
| Kurdish | Simnan | ku |
| ku-arab | سمنان | ku-arab |
| ku-latn | Simnan | ku-latn |
| Lithuanian | Semnanas | lt |
| Latvian | Semnana | lv |
| Malagasy | Semnan | mg |
| Marathi | सेमनन | mr |
| Malay (macrolanguage) | Semnan | ms |
| mzn | سمنان | mzn |
| Norwegian Bokmål | Semnan | nb |
| Dutch | Semnan | nl |
| Ossetian | Семнан | os |
| Polish | Semnan | pl |
| pms | Semnan | pms |
| pnb | سمنان | pnb |
| Portuguese | Semnan | pt |
| Romanian | Semnan | ro |
| Russian | Семнан | ru |
| Sicilian | Semnan | scn |
| Scots | Semnan | sco |
| sh | Semnan | sh |
| Sinhala | සෙම්නන් | si |
| Slovenian | Semnan | sl |
| Albanian | Semnan | sq |
| Serbian | Семнан | sr |
| sr-ec | Семнан | sr-ec |
| sr-el | Semnan | sr-el |
| Swedish | Semnan | sv |
| szl | Symnůn | szl |
| Tamil | செம்நன் | ta |
| Telugu | సెమ్నాన్ | te |
| Tajik | Симнон | tg |
| tg-latn | Simnon | tg-latn |
| Thai | เซมนอน | th |
| Turkish | Simnan | tr |
| Tatar | Симнан | tt |
| Ukrainian | Семнан | uk |
| Urdu | سمنان | ur |
| vec | Semnan | vec |
| Vietnamese | Semnan | vi |
| war | Semnan | war |
| xmf | სემნანი | xmf |
| Chinese | 塞姆南 | zh |
| zh-cn | 塞姆南 | zh-cn |
| zh-hans | 塞姆南 | zh-hans |
| zh-hant | 塞姆南市 | zh-hant |