Macarthur (postcode 2904) is a suburb in the Canberra district of Tuggeranong. The suburb is named after John Macarthur, one of the founders of Australia's Merino wool industry. It was gazetted on 22 March 1982 and first settled in 1983. The wool industry is the theme for street names. The suburb has an area of 1.27 km². It is next to the suburbs of Fadden and Gilmore, and is located north of Isabella Drive.