Albert Kayser (28 November 1898 – 18 October 1944) was a German trades union official, political activist and politician (KPD). In July 1932 he was elected a member of the national parliament (Reichststag). By the time democracy was suspended, in March 1933, he had already been arrested and detained by government authorities. He was released at the end of 1933 and spent much of 1934 and early 1935 living "underground" (unregistered with any city hall) engaged in political resistance. Most of the twelve Nazi years he spent in a succession of jails and concentration camps where opportunities for resistance were more limited. He died at Buchenwald in October 1944, probably from a form of Typhus ("Flecktyphus"). An illegal funeral service was held for him in the camp on 22 October 1944.