Cognomen Calhoun-Somorin (Calhoun-Somorin 
) , globally, is an extremely rare last name. The cognomen Calhoun-Somorin is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Calhoun, and a last name Somorin.
| VARIANT | COUNTRY |
|---|---|
| Calhoun-Somorin | United States |