Sobibor (, Polish: [sɔˈbibur]) was an extermination camp built and operated by Nazi Germany as part of Operation Reinhard. It was located in the forest near the village of Sobibór in the General Government region of German-occupied Poland.

As an extermination camp rather than a concentration camp, Sobibor existed for the sole purpose of murdering Jews. The vast majority of prisoners were gassed within hours of arrival. Those not killed immediately were forced to assist in the operation of the camp, and few survived more than a few months. In total, some 170,000 to 250,000 people were murdered at Sobibor, making it the fourth-deadliest Nazi camp after Belzec, Treblinka, and Auschwitz.

The camp ceased operations after a prisoner revolt which took place on 14 October 1943. The plan for the revolt involved two phases. In the first phase, teams of prisoners were to discreetly assassinate each of the SS officers. In the second phase, all 600 prisoners would assemble for evening roll call and walk to freedom out the front gate. However, the plan was disrupted after only 11 of the SS officers had been killed. The prisoners had to escape by climbing over barbed wire fences and running through a mine field under heavy machine gun fire. About 300 prisoners made it out of the camp, of whom 58 are known to have survived the war.

After the revolt, the Nazis demolished the camp and planted it over with pine trees. The site was neglected in the first decades after World War II, and the camp had little presence in either popular or scholarly accounts of the Holocaust. It became better known after it was portrayed in the TV miniseries Holocaust (1978) and the film Escape from Sobibor (1987). The Sobibor Museum now stands at the site, which continues to be investigated by archaeologists. Photographs of the camp in operation were published in 2020 as part of the Sobibor perpetrator album.