Soure is a Brazilian municipality situated in the northern state of Pará. It is located on the island of Marajó, which lies within the Amazon River at its mouth. The municipality covers an area of 3,512.863 km² and serves as part of the Marajó mesoregion and the Arari microregion.
As of 2020, the population of Soure is estimated to be 25,565 people. The city's location on Marajó Island places it in a geographically distinct area within the northern Brazilian landscape.