Petnjica Municipality is one of the municipalities of Montenegro. The municipality is located in northern Montenegro. The center is Petnjica. The Petnjica Municipality was created in 2013, when it was split from the Berane Municipality.
The village of Petnjica is the administrative center of the Petnjica Municipality, which had a population of 4,957 in 2023. The village of Petnjica itself had a population of 518. The ethnic groups in the Petnjica Municipality, according to the 2023 census: ==References==