Kukatja, Kukatj, Kokatja or Gugadja may refer to one of several Australian Aboriginal peoples or their languages:
Kukatj people of Queensland Kukatj language
The two dialects of the Western Desert language which have both been named 'Kukatja'. The Kukatja people found near Lake Gregory in Western Australia. The Kukatja people near Haasts Bluff in the Northern Territory, who are now known as 'Luritja'. Luritja language
More unusually: Kokatha people of South Australia (Kokatja is the Yankuntjatjarra pronunciation) Kokatha language