Plasnica (Macedonian: Пласницаⓘ, Turkish: Plasniça) is a municipality in western North Macedonia.

Plasnica is also the name of the village where the municipal seat is found.

Plasnica Municipality is part of the Southwestern Statistical Region.

It is particularly noteworthy in having a mostly ethnic Turkish population.

According to the 2021 North Macedonia census, this municipality has 4,222 inhabitants.