Manfred Ackermann (1 November 1898 – 16 June 1991) was an Austrian Social Democratic politician and trade union official in Austria and the United States. Ackermann served in the Austrian forces during World War I. After returning to civilian life, he became involved in trade union activities and the Sozialdemokratische Arbeiterpartei (SDAP). Ackermann retired in 1964 and returned to Austria. He lectured there until his death in 1991 and was one of the initiators of the Contact Committee of the Federation of Socialist Youth freedom fighters. His urn is held at Feuerhalle Simmering in Vienna.