Cognomen Querwin (Querwin 
) , globally, is an extremely rare last name. The cognomen Querwin is characteristic of Latin America and the Caribbean, particularly Venezuela, where it is a very rare surname, Honduras, and Peru, where it is an extremely rare surname. More frequently, Querwin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Querwin | Peru, Honduras, Venezuela, Philippines |