The Communist Workers Union of Germany (German: Kommunistischer Arbeiterbund Deutschlands, KABD) was a K-Gruppen, and a Communist party in West Germany.

The organization reportedly "fully supported" the works of Marx, Engels, Lenin, Stalin, and Mao.

Willi Dickhut, one of the initiators of the split, was expelled from the DKP in 1966.

The organization's central organ was the "Red Flag" (Rote Fahne), which exists today as the MLPD's "Red Flag Magazine" (Rote Fahne Magazin).

On January 17, 1981, the leadership of the federation announced the prospect of founding a party.