Kata Tjuta, formerly known as The Olgas, is a group of large ancient rock formations approximately 30 kilometres away from Uluru in Australia's Red Centre. Together these giant stone formations form the two major landmarks within the Uluru-Kata Tjuta National Park.

The 36 domes that make up Kata Tjuta are spread over an area of more than 20 kilometres. The highest point is Mount Olga, which was named in honour of Queen Olga of Württemberg.

Uluru-Kata Tjuta National Park is jointly managed by its Anangu traditional owners and Parks Australia. Kata Tjuta is sacred to the Anangu people who have inhabited the area for more than 22,000 years. The sandstone domes of Kata Tjuta are believed to be around 500 million years old.