The Mann Ranges are a mountain range in central Australia. It is located in the far northwest of South Australia, with a small section running over the border into the Northern Territory. It is part of the geological region known as the Musgrave Block, which also includes the Petermann and Musgrave Ranges. Mountains in this region were formed in the Petermann Orogeny (600–550 million years ago).This area is part of the traditional country of the Pitjantjatjara nation.