Freshwater ostracodes from the Northern Territory and the Kimberleys, Western Australia, are described. They comprise 17 species of which 6 are new: Cyprinotus kimberleyensis, Zsocypris williamsi, "Strandesia" dorsoviridis, Candonocypris Jitzroyi, Cypretta baylyi, and Cypretta lutea. The ostracodes include the first records from Australia of Isocypris, Strandesia, and Heinicypris, and exhibit affinities with those of eastern Australia, Indonesia, and South Africa.