Cognomen Wejs (Wejs 
) , across the world, is a rare surname. The surname Wejs is habitual in Denmark, where it is a rare surname, Poland, and the United Kingdom, where it is an extremely rare surname. More frequently, Wejs is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Wejs | Brazil, Poland, United States, United Kingdom, Denmark |
| violetta wejs-milewska Polish historian, PL (b. 1960) |
|