Cognomen Derlhy (Derlhy 
) , worldwide, is an extremely rare family name. The family name Derlhy is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and Mexico. Much more frequently, Derlhy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Derlhy | Democratic Republic of the Congo, Venezuela, Mexico, Nicaragua |