Family name Clarch (Clarch 
) , throughout the world, is an extremely rare last name. The surname Clarch is characteristic of Latin America and the Caribbean, particularly Venezuela, where it is a very rare surname, Honduras, and Brazil, where it is an extremely rare surname. Much less frequently, Clarch is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Clarch | Honduras, Brazil, Venezuela |