
Territorial Heraldry
Municipality of Kostajnica
Prijedor, Republika Srpska Region
- Bearer
- Municipality of Kostajnica
- Adopted
- 25 April 2014
- Region
- Prijedor Region
- Entity
- Republika Srpska
- Official website
- opstina-kostajnica.com
The device of the Municipality of Kostajnica was adopted on 25 April 2014. It has the form of a medieval shield, and at its centre is the chestnut from which the place took its name.
Blazon
Insignia
At the centre a chestnut, and at the base two chestnut leaves in brown framing the shield; above them the blue River Una, on the right the old fortress, on the left the bridge over the Una; the middle is green with two hillocks (Balj Hill, known for its chestnut forest), above a blue sky. The inscription “Костајница — Castanowiz”.
Flag
A white flag with the device of the municipality in the centre.






