| English | eng-000 |
| Thaddeus | |
| Sambahsa-mundialect | art-288 | Thaddayos |
| беларуская | bel-000 | Тадэй |
| català | cat-000 | Thaddeus |
| čeština | ces-000 | Tadeáš |
| Anishinaabemowin | ciw-000 | Daadiyas |
| Deutsch | deu-000 | Thaddäus |
| Esperanto | epo-000 | Tadeo |
| français | fra-000 | Thaddée |
| galego | glg-000 | Thaddeus |
| hrvatski | hrv-000 | Tadija |
| magyar | hun-000 | Tádé |
| արևելահայերեն | hye-000 | Թադէոս |
| italiano | ita-000 | Taddeo |
| latine | lat-000 | Thaddaeus |
| lietuvių | lit-000 | Tadas |
| polski | pol-000 | Tadeusz |
| polski | pol-000 | Tadzio |
| português | por-000 | Tadeu |
| русский | rus-000 | Фаддей |
| slovenčina | slk-000 | Tadeáš |
| slovenščina | slv-000 | Tadej |
| español | spa-000 | Tadeo |
| español | spa-000 | Thaddeus |
| српски | srp-000 | Тадија |
| українська | ukr-000 | Тадей |