Family name Wilbrett (Wilbrett 
) , all around the world, is a very rare cognomen. The cognomen Wilbrett is characteristic of France, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Wilbrett is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wilbrett | France, United States, South Africa |