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Cognomen Kelj (Kel
, Kelj
, Caulis
) , in all the world, is quite a common surname. The last name Kelj is habitual in Turkey, where it is quite a rare surname, Lithuania, and Mauritius. Measured by absolute frequency, it is the most numerous in Turkey, Myanmar, and Indonesia. Also, Kelj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kel | Australia, Indonesia, China, Turkey, Myanmar |
| Kelj | India, Croatia |
| Caulis | India, United Kingdom, United States |