Willhelm Hammann (German pronunciation: [ˈvɪlhɛlm ˈhaman]; 25 February 1897 in Biebesheim am Rhein – 26 July 1955 in Rüsselsheim) was a German educator and communist politician. A town councilor and a member of the provincial parliament of Hesse in the 1920s, he was imprisoned in Buchenwald concentration camp from 1938 to 1945. In April 1945, Hammann, who was the blockälteste of the children's barrack, sabotaged the planned movement of Jews on a death march to a certain extermination. Yad Vashem awarded Hammann the title of "Righteous among the Nations". Yisrael Meir Lau, current chairman (as of May 2010) of Yad Vashem Council, was one of the children saved by Hammann.