![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/2/28/Crkva_svih_Svetih%252C_Kostajnik_001.jpg/640px-Crkva_svih_Svetih%252C_Kostajnik_001.jpg&w=640&q=50)
Kostajnik
Village in Serbia / From Wikipedia, the free encyclopedia
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Kostajnik (Serbian Cyrillic: Костајник) is a village in Serbia. It is situated in the Krupanj municipality, in the Mačva District of Central Serbia. Kostajnik is notable for being a fortified village since 1445. The village had a Serb ethnic majority and a population of 1,048 in 2002.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/9/9f/Serbia_Krupanj.png/320px-Serbia_Krupanj.png)