Mowanjum is a medium-sized Aboriginal community, located 10 km (6 mi) south east of Derby in the Kimberley region of Western Australia, within the Shire of Derby-West Kimberley. At the 2016 Australian census, Mowanjum had a population of 311. The settlement began after the establishment of a mission station by the Presbyterian Church in 1912, first called the Port George IV mission and later Kunmunya.