Family name Yelby (Yelby 
) , in the world, is a very rare cognomen. The cognomen Yelby is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a very rare surname, Nicaragua, and Venezuela. Likewise, Yelby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yelby | Costa Rica, Peru, Nicaragua, Honduras, Venezuela |