Holzminden prisoner-of-war camp was a World War I prisoner-of-war camp for British and British Empire officers (Offizier Gefangenenlager) located in Holzminden, Lower Saxony, Germany. It opened in September 1917, and closed with the final repatriation of prisoners in December 1918. It is remembered as the location of the largest PoW escape of the war, in July 1918, when twenty-nine officers escaped through a tunnel, ten of whom evaded recapture and managed to make their way back to Britain.
The prisoner-of-war camp is not to be confused with Holzminden internment camp, a much larger pair of camps (one for men, and one for women and children) located on the outskirts of the town, in which civilian internees were held. The internees mainly comprised Polish, Russian, Belgian and French nationals, as well as a small number of Britons.