Stalag VI-B was a German World War II prisoner-of-war camp (Stammlager), located about 3 km (1.9 mi) east of the village of Versen in the Emsland district of Lower Saxony, in north-western Germany, close to the border with the Netherlands.

It was designed to hold up to 1,500 political prisoners, who worked under the direction of the Reichsarbeitsdienst ("State Labor Service") in the local peat bogs.

[1] After the outbreak of World War II in September 1939 the camp was taken over by Military District VI,[2] and designated Stalag VI-B, with sub-camps (Zweiglager) — designated Stalag VI-B/Z — a few kilometres away at Oberlangen, Wesuwe and Fullen.

[2] From November 1944 prisoners from the Neuengamme concentration camp in Hamburg were housed at Versen to work on the Friesenwall, part of the Atlantic Wall between the Netherlands and Denmark.

[2] The camp at Versen was used after the war as a prison under the control of the Lower Saxony Ministry of Justice.