William has long been one of the most popular, common male names in the Anglophone world after only John. In the U.S., it’s never fallen out of the Top 20, and has been in the Top 5 during many of the years from 1880 to the present day. Its highest position has been #2, which it’s held many a time. The name is also very popular in Great Britain, New Zealand, Scandinavia, Australia, and Canada.
It’s also one of those great universal names, with equivalents in so many other languages. Here are some of the other forms:
1. Wilhelm is German and Polish.
2. Guillaume is French.
3. Vilhelm is Scandinavian, Finnish, and Hungarian.
4. Viljami is another Finnish form.
5. Vilhelmi is also Finnish. Nicknames for all three Finnish forms include Vili, Vilho, Viljo, Ville, and Jami.
6. Willem is Dutch. Nicknames include Pim, Wim, Willy, Willi, and Jelle.
7. Vilhelms is Latvian. The nickname is Vilis.
8. Vilhjálmur is Icelandic and Faroese.
9. Wöllem is Limburgish.
10. Wullem is another Limburgish form. The nickname is Wum.
11. Vilmos is Hungarian. The base nickname form is Vili.
12. Wilhelmus is the official Dutch form of William, used on birth certificates but typically not in everyday life.
13. Viliam is Slovak.
14. Wilmot is a Medieval English diminutive.
15. Vilhelmo is Esperanto. The nickname is Vilĉjo.
16. Villem is Estonian.
17. Vilhelmas is Lithuanian.
18. Viljem is Slovenian. Nicknames include Vili and Vilko.
19. Guillem is Catalan.
20. Gwilherm is Breton.
21. Guillermo is Spanish.
22. Guilherme is Portuguese.
23. Uilliam is Irish. Nicknames include Ulick, Uilleag, and the super-trendy Liam.
24. Uilleam is Scottish.
25. Gwilym is Welsh.
26. Gwilim is another Welsh form.
27. Gwillym is a third Welsh form.
28. Vilém is Czech.
29. Guglielmo is Italian.
30. Illiam is Manx.
31. Vilim is Croatian. The base nickname is Vilko.
32. Wiremu is Maori.
33. Guildhelm is Medieval Dutch.
34. Guilhem is Occitan and Gascon.
35. Guillen is Gascon, Aragonese, and Medieval Spanish.
36. Guillerme is Galician.
37. Ouiliam is Greek.
38. Uiliam is a rare Brazilian–Portuguese form.
39. Uilyam is Russian, Belarusian, Ukrainian, and Turkish.
40. Uiriamu is Japanese.
41. Vilgelm is Russian.
42. Vilhjalmr is Old Norse.
43. Vîliarme is Greenlandic.
44. Viliami is Tongan.
45. Vilius is Lithuanian.
46. Viljam is Swedish and Faroese.
47. Villiam is Scandinavian and Faroese.
48. Viļums is a rare Latvian form.
49. Wella is Cornish.
50. Wëllem is another Limburgish form.
51. Wiliama is Hawaiian.
52. Velvel is Yiddish. Though the name truly means “wolf,” it’s often used as a Yiddish equivalent of William.