Birnam is a locality in the Scenic Rim Region, Queensland, Australia. It is not to be confused with Birnam in the Toowoomba Region.GeographyThe eastern border of Birnam is marked by the Albert River. The locality is relatively undeveloped with the Beaudesert-Beenleigh Road running from the north-east to the south, with a few farms in the east. In the north west the slopes of Mount Dunsinane rise to around 300 m.