Fairbairn Avenue is a major arterial road in the eastern suburbs of Canberra, the capital city of Australia. The road travels from a junction with Pialligo Avenue near Canberra Airport to the Australian War Memorial, a distance of . It is the primary access route to the Australian Defence Force Academy, Campbell Park and Mount Ainslie. Fairbairn Avenue carries the Alternative National Highway 23 designation for a short distance between Majura Road and Morshead Drive. This eastern section suffers from heavy traffic congestion during morning and afternoon peak periods and a number of recent upgrades aim to address this. In 2009, works to improve access and traffic flows around the airport precinct saw Fairbairn Avenue duplicated between Pialligo Avenue - where an existing roundabout was replaced with traffic lights - and Morshead Drive, also improving the intersection with Majura Road. A grade separated interchange constructed over Fairbairn Avenue as part of the Majura Parkway project was completed in 2016.