Mora Dhansiri is a tributary of the Dhansiri River, the main river of Golaghat District in the state of Assam, India. It originates from Laisang peak of Nagaland and passes through Kaziranga National Park. It flows through a distance of 352 kilometres (219 mi) from south to north before joining the Brahmaputra River on its south bank. Its total catchment area is 1,220 square kilometres (470 sq mi).