Menno, Baron van Coehoorn (March 1641 – March 17, 1704) is a Dutch soldier and military engineer of Swedish extraction.

He makes a number of influential weaponry innovations in siege warfare and fortification techniques.

He is also known as the "Hollandish Vauban" (Hollandse Vauban), after his famous French counterpart Sébastien Le Prestre de Vauban.