Family name Karlovac (Karlovac 
) , around the globe, is a very rare surname. The cognomen Karlovac is habitual in Croatia, where it is quite a rare surname, Chile, where it is an extremely rare surname, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Karlovac | Chile, United States, Croatia |
| elza karlovac Croatian opera singer, HR (b. 1910) |
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| selma karlovac Yugoslav actress (1932-1994), HR (b. 1932) |
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