Last name Gruenfeldt-Roy (Gruenfeldt-Roy 
) , around the globe, is an extremely rare family name. The surname Gruenfeldt-Roy is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Gruenfeldt, and a last name Roy.
| VARIANT | COUNTRY |
|---|---|
| Gruenfeldt-Roy | United States |