Cognomen Clagg (Clagg 
) , all over the world, is quite a rare last name. The family name Clagg is characteristic of the United States, where it is a rare surname, New Zealand, where it is a very rare surname, and Canada. Measured by absolute frequency, this name is the most popular in the United States, Canada, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Clagg | Canada, Venezuela, New Zealand, Germany, United States |