| Language | Name | Code |
|---|---|---|
| Arabic | بلدية سيدهارثاناجار | ar |
| arz | بلدية سيدهارثاناجار | arz |
| Asturian | Siddharthanagar | ast |
| awa | सिद्धार्थनगर | awa |
| bho | भैरहवा | bho |
| Cebuano | Bhairāhawā | ceb |
| German | Siddharthanagar | de |
| Modern Greek (1453-) | Σιντάρταναγκαρ | el |
| English | Siddharthanagar | en |
| Spanish | Siddharthanagar | es |
| Persian | سیدارتاناگار | fa |
| Finnish | Siddharthanagar | fi |
| French | Siddharthanagar | fr |
| Hebrew | סידהארטנגר | he |
| Hindi | भैरहवा | hi |
| Italian | Siddharthanagar | it |
| Japanese | シッダルタナガル | ja |
| Kurdish | Siddharthanagar | ku |
| mai | सिद्धार्थनगर नगरपालिका | mai |
| Norwegian Bokmål | Siddharthanagar | nb |
| Nepali (macrolanguage) | सिद्धार्थनगर नगरपालिका | ne |
| new | सिद्धार्थनगर | new |
| Dutch | Siddharthanagar | nl |
| Polish | Siddharthanagar | pl |
| Portuguese | Siddharthanagar | pt |
| pt-br | Bhairahawa | pt-br |
| Russian | Сиддхартханагар | ru |
| Slovenian | Siddharthanagar | sl |
| Thai | สิทธารถนคร | th |
| Urdu | سدھارتھ نگر | ur |
| yue | 錫陀塔那迦 | yue |
| Chinese | 錫陀塔那迦 | zh |