The Boomi River, an anabranch of the Barwon River and part of the Macintyre catchment within the Murray–Darling basin, is located in the north–western slopes region of New South Wales, flowing downstream into the South Downs region of Queensland, Australia.

Course and features

The river rises about 15 km east of Gundabloui, and flows generally north–east, joined by five minor tributaries, before reaching its confluence with the Macintyre River, about 12 km north–east of Boomi. The river descends 40 m over its 231 km course. The Boomi River flows past, but not through, the town of Mungindi.