The Yellow-rumped Munia (Lonchura flaviprymna), also known as the Yellow-rumped Mannikin, is a species of estrildid finch found in eastern Kimberley region and north-west Northern Territory, Australia. It has an estimated global extent of occurrence of 20,000 to 50,000 km². It is found in subtropical/ tropical mangrove, moist savanna & wetlands habitat. The status of the species is evaluated as Least Concern.