Obersturmbannführer Bruno Müller or Brunon Müller-Altenau (13 September 1905 – 1 March 1960) served as an SS Lieutenant Colonel during the Nazi German invasion of Poland.

They were active until late 1940, and composed of the Gestapo, Kripo and SD functionaries involved in extermination actions including Operation Tannenberg as well as Intelligenzaktion against the Polish cultural elites.

[9][10][11] Following international protest involving prominent Italians including Benito Mussolini and the Vatican,[11] surviving prisoners older than 40, were released on 8 February 1940.

[13][14][15] Müller briefly served as the RKF chief of staff in Silesia in late 1940, replaced by SS-Obersturmbannführer Fritz Arlt in preparation for the Action Saybusch in Żywiec.

His Einsatzgruppe D mobile killing unit (term used by Holocaust historians), of which Einsatzkommando 11b was a part, became responsible for the murder of over 90,000 people, an average of 340 to 700 victims per day.

[21] In October 1941, four months after the commencement of Operation Barbarossa, Müller was replaced as leader of Einsatzkommando "11b" by SS-Obersturmbannführer Werner Braune, who was later named by Commander Otto Ohlendorf in his killing tally sent to Berlin.