| English | eng-000 |
| Billy | |
| català | cat-000 | Billy |
| čeština | ces-000 | Billy |
| Cymraeg | cym-000 | Billy |
| Deutsch | deu-000 | Billy |
| eesti | ekk-000 | Billy |
| français | fra-000 | Billy |
| galego | glg-000 | Billy |
| yn Ghaelg | glv-000 | Illiam |
| italiano | ita-000 | Billy |
| қазақ | kaz-000 | Билли |
| македонски | mkd-000 | Били |
| Nederlands | nld-000 | Billy |
| polski | pol-000 | Billy |
| русский | rus-000 | Билли |
| español | spa-000 | Billy |
| srpski | srp-001 | Billy |
| svenska | swe-000 | Billy |
| Volapük | vol-000 | Billy |