Heerenveen is a town and municipality in the province of Friesland (Fryslân), in the Northern Netherlands. In 2021, the town had a population of 29,790 while the municipality had a population 50,859.

West Frisian, or simply Frisian, is a West Germanic language spoken mostly in the province of Friesland in the north of the Netherlands, mostly by those of Frisian ancestry. It is the most widely spoken of the Frisian languages.