Martin Herrenknecht (born 24 June 1942) is a German engineer and businessman.
He founded an engineering company in 1975, which became Herrenknecht AG in 1977.
Today his company makes large, heavy tunnel boring machines.
He graduated from Max Planck Gymnasium and studied at the University of Constance, earning an engineering degree in 1964.
The Green politician Winfried Hermann accused him of having too close a relationship with Lothar Späth.