Otto Willem Arnold baron van Verschuer, lord of Mariënwaerdt, Echteld and Enspijk (22 July 1927 – 4 June 2014) was a Dutch politician. He served in the States of Gelderland between 1962 and 1978, while being part of the Executive of the same province from 1965. Verschuer was member of the Dutch Council of State between 1978 and 1983.