Surname Clowder (Clott 
, Clowder ) , all over the world, is a rare family name. The cognomen Clowder is characteristic of Argentina, where it is a very rare surname, the United States, and Canada, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Clott | Canada, Brazil, United States, United Kingdom, Argentina |
| Clowder | United States |