Mastenbroek is a polder in the Netherlands, and a village in that polder. Mastenbroek may also refer to: Rie Mastenbroek (1919–2003), Dutch swimmer, Olympic gold medalist Emile Mastenbroek, Dutch politician, Queen's Commissioner of Limburg in the 1990s Marieke Mastenbroek, Dutch swimmer, gold medalist in the 1991 European Aquatics Championships Edith Mastenbroek (1975–2012), a Dutch Member of the European Parliament