Wilhelm Adalbert Hosenfeld (; 2 May 1895 – 13 August 1952), originally a schoolteacher, was a German Army officer who by the end of the Second World War had risen to the rank of Hauptmann (Captain). He helped to hide or rescue several Polish people, including Jews, in Nazi-occupied Poland, and helped Polish-Jewish pianist and composer Wladyslaw Szpilman to survive, hidden, in the ruins of Warsaw during the last months of 1944. He was taken prisoner by the Red Army and died in Soviet captivity seven years later.