Family name Gilio-Tenan (Gilio-Tenan 
) , in the entire world, is an extremely rare last name. The family name Gilio-Tenan is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Gilio, and a last name Tenan.
| VARIANT | COUNTRY |
|---|---|
| Gilio-Tenan | United States |