Horst Heintze (15 August 1927 – 14 December 1997) was a German trades union official and politician.
Through the union movement he rose to become a member of the People's Chamber (Volkskammer) in the German Democratic Republic and, from 1963, a member of the powerful Party Central Committee.
He was unusual in rising this far through the power structure of the country despite having been a Nazi Party member in his youth.