Maarten de Wit (30 May 1883 in Wormerveer – 30 March 1955 in Zaandam) was a sailor from the Netherlands who represented his native country at the 1928 Summer Olympics in Amsterdam.
De Wit, as crew member on the Dutch 8 Metre Hollandia, took the 2nd place with helmsman Johannes van Hoolwerff and fellow crew members: Lambertus Doedes, Cornelis van Staveren, Henk Kersken and Gerard de Vries Lentsch.
De Wit was the son of Simon de Wit (1852–1934), founder of the Simon de Wit supermarket chain, of which Maarten was a director.