Boarnsterhim (population: 18,268) is a municipality in the northern Netherlands, in the province of Friesland. The municipality covers an area of 168.59 km² (of which 14.66 km² water).
The municipality of Boarnsterhim consists the following towns, villages and townships: Akkrum, Aldeboarn, Dearsum, Eagum, Friens, Grou, Idaerd, Jirnsum, Nes, Poppenwier, Raerd, Reduzum, Sibrandabuorren, Terherne, Tersoal, Warstiens, Warten, Wergea.