Cognomen Laibow-Koser (Laibow-Koser 
) , around the world, is an extremely rare family name. The last name Laibow-Koser 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 first name Laibow, and a last name Koser.
| VARIANT | COUNTRY |
|---|---|
| Laibow-Koser | United States |