Brusnik is a Slavic toponym, derived from brus, meaning whetstone, or brusnica, meaning "cranberry" or "cowberry". It may refer to:
Bulgaria Brusnik, Bulgaria, a village in Pernik Province
Croatia Brusnik (island), a volcanic island in the Adriatic Sea Brusnik, Croatia, a village in Pakrac Brusnik, a village in Srbac
Kosovo Brusnik, Vučitrn, a village
North Macedonia Brusnik, Bitola, a village Brusnik, Negotino, a village in Negotino Municipality
Poland Bruśnik, a village in arnów County, Lesser Poland Voivodeship
Serbia Brusnik, Ivanjica, a village Brusnik, Zaječar, a village
Slovakia Brusník, a village and municipality in Banská Bystrica Region
See also Brusnica (disambiguation)