Surname Simms-Ross (Simms-Ross 
) , across the world, is an extremely rare family name. The last name Simms-Ross is characteristic of Northern Europe, particularly the United Kingdom, where it is an extremely rare surname. Parts of the name also exists independently as a last name Simms, and a last name Ross.
| VARIANT | COUNTRY |
|---|---|
| Simms-Ross | United Kingdom |