Mount Ainslie or Mount Ainslie-Majura is a part of Canberra Nature Park. It borders on the inner suburbs of Campbell, Ainslie and Hackett .

It has a lookout point on the summit which stands 842 metres above sea level and gives excellent 360° views across the city and surrounding country within the Australian Capital Territory (A.C.T.).

Mount Ainslie marks the northernmost point of a land axis, planned by Walter Burley Griffin, that stretches through North and South Canberra. This axis takes in the Australian War Memorial and the two Parliament Houses.

It is named after James Ainslie, a 19th century settler who owned a large property in what is now North Canberra. Contrary to what some accounts have stated, he is not buried in an unmarked grave at the base of the hill.