Last name Koelb (Koelb 
) , in the entire world, is a very rare family name. The last name Koelb is habitual in Belgium, where it is a rare surname, Germany, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Koelb | Belgium, United States, Germany |
|
tadzio koelb American writer, US (b. 1971) |
|
| clayton koelb American literary scholar, US (b. 1942) |
|