| Language | Name | Code |
|---|---|---|
| Arabic | سيوسان | ar |
| Bulgarian | Суисан | bg |
| Bengali | সেওসান | bn |
| Catalan | Seosan | ca |
| Cebuano | Suisan | ceb |
| Czech | Sosan | cs |
| Danish | Seosan | da |
| German | Seosan | de |
| Modern Greek (1453-) | Σόσαν | el |
| English | Seosan | en |
| Esperanto | Sosan | eo |
| Spanish | Seosan | es |
| Estonian | Seosan | et |
| Persian | سئوسان | fa |
| Finnish | Seosan | fi |
| French | Seosan | fr |
| Irish | Seosan | ga |
| Gujarati | સિઓસન | gu |
| hak | Shuì-sân-sṳ | hak |
| Hindi | सेओसान | hi |
| Armenian | Սոսան | hy |
| Indonesian | Seosan | id |
| Italian | Seosan | it |
| Japanese | 瑞山市 | ja |
| Kannada | ಸೀಸನ್ | kn |
| Korean | 서산시 | ko |
| Lithuanian | Sosanas | lt |
| Latvian | Sosana | lv |
| Mongolian | Сосань | mn |
| Marathi | सेवोसण | mr |
| Malay (macrolanguage) | Seosan | ms |
| nan | Seosan Chhī | nan |
| Norwegian Bokmål | Seosan | nb |
| Dutch | Seosan | nl |
| Occitan (post 1500) | Seosan | oc |
| Polish | Seosan | pl |
| Portuguese | Seosan | pt |
| Russian | Сосан | ru |
| Sinhala | සීසාන් | si |
| Swedish | Seosan | sv |
| Tamil | செஓசன் | ta |
| Telugu | సేయోసన్ | te |
| Thai | โซซัง | th |
| Tagalog | Seosan | tl |
| Turkish | Seosan | tr |
| Tatar | Сосан | tt |
| Ukrainian | Сосан | uk |
| Urdu | سیوسان | ur |
| vec | Seosan | vec |
| Vietnamese | Seosan | vi |
| war | Seosan | war |
| yue | 瑞山 | yue |
| Chinese | 瑞山市 | zh |
| zh-hans | 瑞山 | zh-hans |