O'Malley (postcode: 2606) is a suburb in the Canberra district of Woden Valley. On Census night 2011, O'Malley had a population of 873 people. There are numerous embassies in O'Malley. 42.8% of the population was foreign born, the fifth highest for any Canberra suburb.
The suburb is named after King O'Malley, who was the politician who arranged the competition for a design for Canberra. Streets in O'Malley are named with Aboriginal words.
Deakin Volcanics green-grey and purple rhyodacite are under the suburb. To the east in the valley bottom is Deakin Volcanics purple and green tuff and up the slopes of Mount Mugga Mugga are Deakin Volcanics coarse dark purple rhyodacite.