Cognomen Clotan (Clotan 
) , all around the world, is a very rare surname. The cognomen Clotan is habitual in Romania, where it is a rare surname, the United States, where it is an extremely rare surname, and India. Very seldom, Clotan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Clotan | India, Romania, Spain, United States |