Around the world, Уільям (William 
, Уільям 
) is a prevalent masculine first name. The given name Уільям is characteristic of the United States, where it is a widespread male name, Nicaragua, where it is a common boy's name, and the United Kingdom (explore the name in all countries). Not in comparison with a country's population, it is commonest in the United States, Brazil, and the United Kingdom. Much less frequently, Уільям is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| William | United Kingdom, Tanzania, Brazil, United States, Philippines |
| Уільям | Ukraine |
Bill, Ghilherme, Goulielmos, Guglielmo, Guilhem, Guilherme, Guillaume, Guillem, Guillerme, Guillermo, Guillén, Gulielmus, Gwilherm, Gwilym, Gwyllym, Morad, Murad, Uilyam, Vilem, Vilhelm, Vilhelmo, Vilho, Viliamu, Vilijam, Viljam, Viljami, Viljams, Viljem, Viljo, Vilmos, Vilém, Wai-Lim, Wei-Lian, Wei-Lien, Wilhelm, Wilhelm Carl, Wiliam, Will, Willem, Williams, Wiremu, Wm., Μπιλ, Бил, Билл, Біл, Білл, Вил, Вилем, Вилл,
Уільям is also a prevalent name for the fictitious and mythical characters: William Tell , the folk hero of Switzerland; Captain Marvel , the fictional DC character, Batman: The Brave and the Bold; William Riker , the fictional character in Star Trek; Buck Rogers , the science fiction hero, Amazing Stories and Mr William Collins , the fictional character from Pride and Prejudice by Jane Austen, Pride & Prejudice, and in many other works.