Walhallow is a village in the North West Slopes region of New South Wales, Australia, near the Mooki River.

The town is in the south east corner of Gunnedah Shire local government area, 370 kilometres (230 mi) north west of the state capital, Sydney and 34 kilometres (21 mi) west of the nearest sizeable town, Quirindi.

It was first gazetted in 1895 following an application made a year previously to the Aboriginal Protection Board.

The former health post building is now used as the Community Development Employment Project (CDEP) offices.

After acquiring grant funds from the now abolished Aboriginal and Torres Strait Islander Commission, the village was fully equipped with housing, maintained roads and upgraded water and sewerage supplies by 1998.