Cognomen Allen-Gentry (Allen-Gentry 
) , in the entire world, is an extremely rare family name. The cognomen Allen-Gentry 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 Allen, and a last name Gentry.
| VARIANT | COUNTRY |
|---|---|
| Allen-Gentry | United States |