Family name Tomas Hernan (Tomas Hernan 
) , in all the world, is a very rare cognomen. The last name Tomas Hernan is characteristic of Latin America and the Caribbean, particularly Chile, where it is a rare surname, and Honduras, where it is a very rare surname. More frequently, Tomas Hernan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tomas Hernan | Peru, Argentina, Chile, Honduras, Ecuador |