Last name Kosztolanyi (Kosztolanyi 
) , around the globe, is quite a rare family name. The surname Kosztolanyi is characteristic of Hungary, where it is quite a common surname, Norway, where it is a rare surname, and Germany, where it is a very rare surname. In absolute terms, it is commonest in Hungary, Germany, and the United States. Very seldom, Kosztolanyi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kosztolanyi | Norway, France, United States, Germany, Hungary |