Surname Estiby (Estiby 
) , around the world, is an extremely rare family name. The family name Estiby is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a very rare surname, and Mexico, where it is an extremely rare surname. Also, Estiby is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Estiby | United States, Honduras, Mexico, Costa Rica |