Cognomen ويلي (Willy 
, Willie , ويلي 
) , across the world, is a common last name. The cognomen ويلي is habitual in Vanuatu, where it is a common surname, Saint Lucia, where it is quite a common surname, and Guam (explore the name in all countries). Measured by absolute frequency, it is the most numerous in the United States, Indonesia, and Nigeria. More prevalently, ويلي is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Willy, Willie | Germany, Indonesia, Kenya, Philippines, United States |
| ويلي | Saudi Arabia, Sudan, Algeria, Egypt, Iraq |
| Whaley | Philippines, Nigeria, United States, Canada, Brazil |