Duffy (postcode: 2611) is a suburb in the Canberra district of Weston Creek. On Census night 2011, Duffy had a population of 3,241 people. Duffy was named in honour of Sir Charles Gavan Duffy, KCMG (1816–1903) the 8th Premier of Victoria. Streets in the suburb of Duffy are named after Australian dams and reservoirs. Duffy was gazetted as a placename on 2 July 1970.
The Canberra bushfires of 2003 destroyed about 200 Duffy homes and the local petrol station. Duffy was the suburb that received the most damage in the fires. Narrabundah Hill, which borders the western edge of Duffy, is managed by ACT Forests and had contained a mature pine plantation before the fires. As of 2005, work was under way to plant a new plantation on the hill and surrounding areas.