Last name Cumback (Cumback 
) , in all the world, is a very rare family name. The surname Cumback is characteristic of Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Cumback | United States |
|
william cumback American politician (1829-1905), US (b. 1829) |
|
| joel a. cumback US (b. 1827) |
|