Robert Danneberg (23 July 1882 – c. 12 December 1942) was an Austrian politician, a member of the Social Democratic Workers Party of Austria (SDAPÖ) and a prominent Austro-Marxist theoretician.

[1][2] Danneberg was one of the architects of Red Vienna and he was killed in the Auschwitz concentration camp in 1942.

[3] Danneburg was born in Vienna on 23 July 1885 into an intellectual Jewish family.

[1][2][4] During the First World War, Danneberg belonged to the 'Anti-War left' inside SDAPÖ.

[4] He represented the SDAPÖ in the Executive of the Labour and Socialist International between October 1931 and December 1935.