Johann Heinrich Karl Menu, as of 1820 Freiherr Menu von Minutoli, was a Prussian Generalleutnant, explorer and archaeologist.

In the siege of Mainz, from 14 April to 23 July 1793, a coalition of Prussia, Austria, and other German states led by the Holy Roman Empire besieged and captured Mainz from revolutionary French forces. The allies, especially the Prussians, first tried negotiations, but this failed, and the bombardment of the city began on the night of 17 June.