| Nederlands | nld-000 |
| Willem | |
| Afrikaans | afr-000 | Willem |
| العربية | arb-000 | ويليام |
| العربية | arb-000 | وِيلْيَام |
| luenga aragonesa | arg-000 | Guillén |
| беларуская | bel-000 | Вільгельм |
| বাংলা | ben-000 | উইলিয়াম |
| brezhoneg | bre-000 | Gwilherm |
| brezhoneg | bre-000 | Lom |
| български | bul-000 | Уилям |
| català | cat-000 | Guillem |
| català | cat-000 | Guim |
| čeština | ces-000 | Vilém |
| ᏣᎳᎩ ᎧᏬᏂᎯᏍᏗ | chr-000 | ᏫᎵᏯᎻ |
| 普通话 | cmn-000 | 吉约姆 |
| 普通话 | cmn-000 | 威廉 |
| 國語 | cmn-001 | 威廉 |
| Hànyǔ | cmn-003 | Wēilián |
| Kernowek | cor-000 | Wella |
| Cymraeg | cym-000 | Gwil |
| Cymraeg | cym-000 | Gwilim |
| Cymraeg | cym-000 | Gwillim |
| Cymraeg | cym-000 | Gwillym |
| Cymraeg | cym-000 | Gwilym |
| dansk | dan-000 | Vilhelm |
| dansk | dan-000 | Willum |
| Deutsch | deu-000 | Wilhelm |
| eesti | ekk-000 | Villem |
| eesti | ekk-000 | Villu |
| ελληνικά | ell-000 | Γουλιέλμος |
| Ellinika | ell-003 | Gouliélmos |
| English | eng-000 | Bill |
| English | eng-000 | Prince William |
| English | eng-000 | Wilhelm |
| English | eng-000 | Wilkie |
| English | eng-000 | Will |
| English | eng-000 | William |
| English | eng-000 | Willis |
| Esperanto | epo-000 | Vilhelmo |
| Esperanto | epo-000 | Vilĉjo |
| euskara | eus-000 | Gillen |
| føroyskt | fao-000 | Vilhjálmur |
| suomi | fin-000 | Vilhe |
| suomi | fin-000 | Vilhelm |
| suomi | fin-000 | Vilhelmi |
| suomi | fin-000 | Vilho |
| suomi | fin-000 | Viljami |
| suomi | fin-000 | Viljo |
| suomi | fin-000 | Ville |
| suomi | fin-000 | Wilhe |
| français | fra-000 | Guillaume |
| français | fra-000 | Wilhelm |
| Frysk | fry-000 | Jelle |
| Gàidhlig | gla-000 | Liam |
| Gàidhlig | gla-000 | Uilleam |
| Gaeilge | gle-000 | Liam |
| Gaeilge | gle-000 | Uilleag |
| Gaeilge | gle-000 | Uilliam |
| Gaeilge | gle-000 | Ulick |
| galego | glg-000 | Guillerme |
| yn Ghaelg | glv-000 | Illiam |
| ʻōlelo Hawaiʻi | haw-000 | Uilama |
| ʻōlelo Hawaiʻi | haw-000 | Wiliama |
| Srpskohrvatski | hbs-001 | Vilim |
| עברית | heb-000 | ווילהלם |
| עברית | heb-000 | ויליאם |
| hrvatski | hrv-000 | Vilim |
| magyar | hun-000 | Vilmos |
| magyar | hun-000 | Vilmós |
| արևելահայերեն | hye-000 | Գուլիելմոս |
| արևելահայերեն | hye-000 | Վիլհելմ |
| íslenska | isl-000 | Vilhjálmur |
| íslenska | isl-000 | William |
| italiano | ita-000 | Guglielmo |
| 日本語 | jpn-000 | ウィリアム |
| 日本語 | jpn-000 | ギヨーム |
| Nihongo | jpn-001 | Viruherumu |
| 한국어 | kor-000 | 윌리엄 |
| Kölsch | ksh-000 | Wilhelm |
| latine | lat-000 | Guilielmus |
| latine | lat-000 | Gulielmus |
| latine | lat-000 | Willelmus |
| Limburgs | lim-000 | Wil |
| Limburgs | lim-000 | Wim |
| Limburgs | lim-000 | Wullem |
| Limburgs | lim-000 | Wum |
| lietuvių | lit-000 | Vilhelmas |
| lietuvių | lit-000 | Vilius |
| latviešu | lvs-000 | Vilhelms |
| latviešu | lvs-000 | Vilis |
| latviešu | lvs-000 | Viljams |
| latviešu | lvs-000 | Viļums |
| македонски | mkd-000 | Вилијам |
| reo Māori | mri-000 | Wiremu |
| Plattdüütsch | nds-000 | Willem |
| Plattdüütsch-Neddersassisch | nds-002 | Willem |
| Plattdüütsch-Neddersassisch | nds-002 | Willken |
| Plattdüütsch-Neddersassisch | nds-002 | Willm |
| Plattdüütsch-Neddersassisch | nds-002 | Wilm |
| Nederlands | nld-000 | Wim |
| nynorsk | nno-000 | William |
| bokmål | nob-000 | Vellum |
| bokmål | nob-000 | Vilhelm |
| bokmål | nob-000 | Viljen |
| bokmål | nob-000 | Villem |
| bokmål | nob-000 | Villiam |
| bokmål | nob-000 | Villum |
| bokmål | nob-000 | William |
| norskr | non-000 | Vilhjalmr |
| norskr | non-000 | Vilhjamr |
| norskr | non-000 | Vilhjálmr |
| occitan | oci-000 | Guilhem |
| occitan | oci-000 | Guilhèm |
| فارسی | pes-000 | ویلیام |
| polski | pol-000 | Wilhelm |
| português | por-000 | Guilherme |
| română | ron-000 | Vilhelm |
| русский | rus-000 | Ви́льям |
| русский | rus-000 | Вильге́льм |
| русский | rus-000 | Вильгельм |
| русский | rus-000 | Вилья́м |
| русский | rus-000 | Вильям |
| русский | rus-000 | Уи́льям |
| русский | rus-000 | Уилья́м |
| russkij | rus-001 | Vilʹgelʹm |
| Scots leid | sco-000 | Weelum |
| Scots leid | sco-000 | Willum |
| slovenčina | slk-000 | Viliam |
| slovenščina | slv-000 | Vili |
| slovenščina | slv-000 | Viljem |
| slovenščina | slv-000 | Vilko |
| español | spa-000 | Guille |
| español | spa-000 | Guillermo |
| español | spa-000 | William |
| српски | srp-000 | Вилим |
| srpski | srp-001 | Vilim |
| svenska | swe-000 | Velam |
| svenska | swe-000 | Vilhelm |
| svenska | swe-000 | Viljam |
| svenska | swe-000 | Villam |
| svenska | swe-000 | Villem |
| தமிழ் | tam-000 | வில்லியம் |
| українська | ukr-000 | Вільгельм |
| Vlaams | vls-000 | Guildhelm |
| ייִדיש | ydd-000 | װֶעלװֶעל |
| 廣東話 | yue-000 | 威廉 |