Westerwolde (Dutch pronunciation: [ˌʋɛstərˈʋɔldə]; Gronings: Westerwoolde) is a municipality in the province of Groningen in the northeast of the Netherlands.
The municipalities of Bellingwedde and Vlagtwedde have merged into the new municipality of Westerwolde on 1 January 2018. The municipality continues to use both municipal halls in Sellingen and Wedde.