Surname Koulchar (Кулшар 
, Кульшар , Koulchar 
) , globally, is a very rare cognomen. The surname Koulchar is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Koulchar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Кулшар | Russia, Kazakhstan |
| Кульшар | Kazakhstan |
| Koulchar | United States |