Surname Fordyce-Ruff (Fordyce-Ruff 
) , all around the world, is an extremely rare last name. The cognomen Fordyce-Ruff 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 Fordyce, and a last name Ruff.
| VARIANT | COUNTRY |
|---|---|
| Fordyce-Ruff | United States |