The Bourtanger Moor (Dutch: Bourtangerveen/Bourtangermoeras, German: Bourtanger Moor, Low Saxon: Boertanger Moor) was a bog in eastern parts in the Dutch provinces of Drenthe and Groningen and the bordering German districts of Bentheim and Emsland. A remaining stretch on the border between Drenthe and the districts Emsland and Betheim is now a nature reserve, the Internationaler Naturpark Bourtanger Moor-Bargerveen.