Ngalia, Ngaliya or Ngalea may refer to:
Ngalia (Western Desert), an Aboriginal people of the Western Desert in Western Australia and South Australia Ngalia (Ngalea or Ooldean), a dialect of the Western Desert language Ngalia (Northern Territory), an Aboriginal Australian people of the Northern Territory Ngaliya, a dialect of the Warlpiri language Ngalia Basin, a sedimentary basin in central Australia
See also Mantjintjarra Ngalia, a union of the Western Desert Ngalia and Mantjintjarra