Maarten de Niet Gerritzoon (16 March 1904 – 25 July 1979) was a Dutch politician.
During the Second World War, he was a prisoner in several Japanese prisoner-of-war camps, like Sukamiskin Penitentiary in Bandung.
As a senator, he often collided with Minister of Foreign Affairs Joseph Luns on the issue of Netherlands New Guinea.
In 1969, he replaced Jannes Pieter Mazure as president of the Senate.
This article about a Dutch Labour Party politician is a stub.