Family name Ružnić (Ružnić 
) , around the world, is a very rare surname. The last name Ružnić is habitual in Southern Europe, particularly Croatia, where it is quite a rare surname.
| amir ružnić Slovenian footballer/agent, SI (b. 1972) |
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| mustafa ružnić Bosnian politician, BA (b. 1980) |
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