Marsum or Marssum is a village in Waadhoeke in the province of Friesland, the Netherlands. It had a population of around 1,052 in January 2017. Before 2018, the village was part of the Menameradiel municipality. Every year a Marsumer of the year is chosen and awarded an award called the Gilded Shit Broom. There are two windmills in Marsum, De Marssumermolen and Terpzigt.