Walter Blume (born 23 July 1906 in Dortmund — died 13 November 1974 in Dortmund) was a lawyer, an SS-Standartenführer (colonel), leader of Sonderkommando 7a, which formed part of the extermination commando group Einsatzgruppe B, which distinguished itself with the killings of thousands of Jews in Belarus and Russia, and was responsible for the deportation of Greek Jews to Auschwitz.