Cognomen Gilman-Vorm (Gilman-Vorm 
) , all around the world, is an extremely rare family name. The family name Gilman-Vorm 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 Gilman, and a last name Vorm.
| VARIANT | COUNTRY |
|---|---|
| Gilman-Vorm | United States |