Surname Ayuen (Ayuen 
) , around the globe, is a rare cognomen. The family name Ayuen is characteristic of South Sudan, where it is quite a rare surname, Sudan, where it is a rare surname, and Kenya. Likewise, Ayuen is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ayuen | Sudan, Kenya, Uganda, United States, South Sudan |