Expansion of the A-League Men

The Expansion of the A-League Men is the ongoing process of establishing new clubs in the A-League Men. The A-League Men was established to replace the NSL as the top soccer division in the Australian league system and is the only fully professional league in the country. It was founded in 2004 with eight teams commencing competition in 2005 and has since expanded into new markets across Australia and New Zealand. The league is currently contested by 12 teams, although a total of 15 have competed at some stage in its short history.

In February 2018, officials announced that the league would expand to 12 teams for the 2019–20 season. After the board of Football Federation Australia was replaced at an annual general meeting in November 2018, the organisation announced that Western United FC would join the A-League Men in the 2019–20 season and Macarthur FC would join in 2020–21.

There is also a long term prospect of teams being added to the A-League Men from a second division that involves Promotion and relegation. Football Australia and the Association of Australian Football Clubs, a group of clubs that currently exist in the state & regional "Member Federations" have been working to implement a second division team with an eventual goal that a football pyramid that would see clubs move between the A-League Men & the second tier, and between the second tier & state leagues.