Surname Omahan (Omahan 
) , throughout the world, is a very rare cognomen. The last name Omahan is characteristic of Indonesia, where it is a very rare surname, Nigeria, where it is an extremely rare surname, and the United States. Much less frequently, Omahan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Omahan | India, Indonesia, Nigeria, United States |