Mount Petrie is a mountain in the south east of the city of Brisbane, Queensland, Australia.

This was partly due to the proximity to the Belmont Rifle Range, around which access is restricted for safety reasons.

The bushlands near Mount Petrie are an important habitat for koala, wallaby, and echidna colonies.

The construction of permanent facilities for the Western Corridor Recycled Water Project in 2008 had a significant impact on the bushland on the mountain.

On 20 February 1942, a Qantas de Havilland 86 passenger aircraft, VH-USE "Sydney", crashed into the base of Mount Petrie, killing all nine people on board.