Cognomen Willny (Willny 
) , in the world, is a very rare family name. The family name Willny is characteristic of Sweden, where it is a rare surname, Israel, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Very seldom, Willny is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Willny | Brazil, Sweden, United States, Venezuela, Israel |
| herbert willny Swedish athletics competitor (1918-2005), SE (b. 1918) |
|