Erich Übelacker (19 October 1899 Vienna – 30 June 1977 Bremen) was a German automobile engineer.
Übelacker studied mechanical engineering at Prague Technical University and subsequently worked there as an assistant to Professor Rudolf Dörfl.
During 1939–41 he worked for Austrian automobile factory Steyr, subsequently moving to Daimler-Benz in Stuttgart constructing turbine engines there between 1941 and 1945.
As a captured soldier he continued the work on turbine engines at Turbomeca in Pau, France.
From 1949 to 1961 he was employed as chief designer of utility and special automobiles at Borgward in Bremen, Germany.