Røyrvik (Southern Sami: Raavrevijhke) is a village and municipality in Nord-Trøndelag county, Norway. It is part of the Namdalen region. The administrative centre of the municipality is the village of Røyrvik. The area has always had a strong Sami influence.The 0.47-square-kilometre (120-acre) village of Røyrvik sits in the central part of the municipality and serves as the administrative center of the municipality. The village of Røyrvik has a population (2011) of 232, which gives it a population density of 494 inhabitants per square kilometre (1,280 /sq mi).
The municipality (originally the parish) is named after the old Røyrvik farm (historically: Røirviken), since the first church, Røyrvik Church, was built there (in 1828). The first element is røyr which means Arctic char and the last element is Vik which means "inlet".