Petnjik (Montenegrin: Петњик) is a village in the municipality of Berane, Montenegro.
It is mainly inhabited by people with the Barjaktarović and Babović surnames, while there are inhabitants with surnames: Nedovic, Anđić, Marinković, etc.
The centre of the village is about 4.5 km from Berane.
According to the 2023 census, its population was 533.
This Montenegro location article is a stub.