Tullamarine is a suburb of Melbourne, Victoria, Australia, 17 km north-west of Melbourne's central business district. It is split between three local government areas—the cities of Brimbank, Hume and Moreland. At the 2011 census, Tullamarine had a population of 6,271.
The suburb is a collection of recent housing estates and light industry. Generally flat and exposed to the hot northerly winds of Melbourne's summer, as well as cold southerly winds in winter, its most notable feature is the nearby Melbourne Airport. Tullamarine's residential area is contained in a circular loop of the Moonee Ponds Creek, and its western boundary is the Melbourne Airport. Tullamarine contains the smaller residential area of Gladstone Park.
The Albion-Jacana railway line separates Tullamarine from Airport West to the south.