The league is currently contested by 12 teams: ten from
Australia and two from
New Zealand. A total of 16 teams have competed at some stage in the league's short history. Only four of these clubs –
Adelaide United, the
Brisbane Roar (as the
Queensland Lions), the
Newcastle Jets, and the
Perth Glory – existed before the A-League was formed in 2004.
Gold Coast United, the
New Zealand Knights, the
North Queensland Fury, and
Western United have formerly competed in the league. Unlike most leagues from across the world, there is no system for
relegation and promotion of teams. The A-Leagues system thus shares some
franchising elements with most other professional leagues in Australia,
Major League Soccer,
Canadian Premier League, and other
major Northern American-based sports leagues.
Timeline DateFormat = yyyy ImageSize = width:1000 height:auto barincrement:20 Period = from:2005 till:2029 TimeAxis = orientation:horizontal PlotArea = right:20 left:0 bottom:50 top:5 #> to display a count on left side of graph, use "left:20" to suppress the count, use "left:20"
Expansion While making a relatively modest start to ensure future stability, both the FFA and the soccer media indicated significant interest in expanding the league. The eight foundation clubs had exclusivity clauses for their respective cities valid for five years, but this did not exclude teams from other areas joining the league. Before the introduction of the A-League, FFA chairman
Frank Lowy speculated that he hoped to expand the league into other cities, mentioning
Canberra,
Hobart,
Wollongong,
Geelong,
Bendigo,
Cairns,
Ballarat,
Albury–Wodonga,
Launceston,
Christchurch,
Auckland,
Sunshine Coast and possibly
Darwin and later
Singapore. In February 2018, officials announced that the league would expand to 12 teams for the 2019–20 season. In December 2018, the FFA announced they accepted the bids of
Western United who joined the league in the
2019–20 season and of
Macarthur FC, who joined the league in the
2020–21 season. In 2021, further steps were taken in an attempt to expand from the recent 12 clubs, with goals being set to get 14 clubs in 2022–23 and a potential 16 clubs in 2023–24. Neither of these goals were met. In March 2023, the Australian Professional Leagues confirmed plans for the next two expansion clubs to be based in Canberra and Auckland, ahead of the 2024–25 season. In October 2023, the preferred bidder as owner of the new Auckland licence was confirmed to be
Bill Foley. The licence was officially awarded to Foley on 21 November 2023.
Auckland FC will join the league in the
2024–25 season. On 13 June 2024, the APL confirmed that the new Canberra men's team would not begin in the 2024–25 season. On 13 February 2025, it was reported that Canberra's entrance would be delayed another season.
Rivalries There are several key rivalries and
local derbies that have formed in the A-League, including:
"Melbourne Derby" – Melbourne City v Melbourne Victory The two Melbourne clubs first met on 8 October 2010 in a lively game at
AAMI Park in front of 25,897 fans. Melbourne City (known at the time as Melbourne Heart) came out on top with a 2–1 victory. A significant narrative in derby history is the role of Melbourne Victory as a more successful club both on and off the field, having joined the A-League five years earlier than City. The rivalry is one of the most intense and well respected in the A-League, producing noticeable atmosphere and some of the largest attendances in the league.
"The Original Rivalry" – Adelaide United v Melbourne Victory The rivalry stems from the traditional cross-border rivalry between sporting teams from South Australia and Victoria but was strengthened by multiple incidents in the 2006–07 season, such as the confrontation between Melbourne Victory captain
Kevin Muscat and Adelaide United coach
John Kosmina. The two clubs contested the
2007 and
2009 A-League Grand Finals, with Melbourne winning the 2009 Grand Final 1–0 against a 10-man Adelaide United side. The two clubs were also involved in the first and only occasion in the A-League during the
2008–09 A-League season, where they both finished on the top of the ladder equal on both points and goal difference.
"Sydney Derby" – Sydney FC v Western Sydney Wanderers The derby was contested for the first time in the 2012–13 season with the introduction of the second Sydney-based club, Western Sydney Wanderers, into the league. Sydney FC grabbed bragging rights by winning the first derby 1–0 at
Parramatta Stadium, however Western Sydney Wanderers won the return match at
Allianz Stadium 2–0. A Sydney Derby held early in the 2015 season broke the Allianz Stadium record for attendance during a regular season in any football code, dating back to the stadium's opening in 1988. A match in 2016 between the two teams broke the record A-League crowd with 61,880 fans attending the match at
ANZ Stadium. Sydney Derby is intensified by the geographic distinction between the two clubs within Sydney, as well as historical grievances related to the foundation of Sydney FC.
"The Big Blue" – Melbourne Victory v Sydney FC This match is so named because blue is the main colour of both teams' playing kits, and is also Australian slang for a fight or a contest. The rivalry has emerged as a result of a number of spiteful encounters between the teams in recent years, and due to the longstanding rivalry between Sydney and Melbourne, Australia's two largest cities. The teams have competed against each other in three grand finals; in
2010 &
2017, with Sydney winning 4–2 on penalties after a 1–1 draw on both occasions and in
2015, with Victory winning 3–0. In 2010, Sydney FC won the A-League Premiership on the final day of the season by defeating Victory 2–0. A Big Blue match is traditionally played on
Australia Day each year.
"The F3 Derby" – Central Coast Mariners v Newcastle Jets Named after the former name of
the freeway that connects the cities of Newcastle and Gosford, this match features the only two clubs in the A-League that are not based in state or national capital cities. The two teams' stadiums are just one hour apart, and the derby was intensified when they competed against each other for the premiership in the
2007–08 A-League season and eventually met in the
Grand Final, which was won 1–0 by the Jets. Since 2022, the teams have competed for a trophy made out of a core drill sample of the motorway.
"The Distance Derby" – Perth Glory v Wellington Phoenix First contested in Wellington with their introduction to the A-League in
2007–08, this fixture is considered one of the longest away trips in world football for a domestic top-flight competition, with the distance between the two cities (which themselves are in different countries) being 5,225 km. Since
2015–16, the two teams have contested the "Long Distance Derby Cup", which is awarded to the team with the best results from the three regular season fixtures between them.
"New Zealand Derby" / "Mai te Raki ki te Tonga" – Auckland FC v Wellington Phoenix With the introduction of expansion club Auckland FC for the
2024–25 season, Wellington will have an opponent from the same country for the first time. The first ever edition of this derby is scheduled for 2 November 2024 at
Wellington Regional Stadium, and they will meet a further two times during the season. On 9 August 2024, Auckland announced the signing of former Wellington goalkeeper
Alex Paulsen, on loan from
AFC Bournemouth which was thought to be in contravention of the "
Caceres rule" which the APL had only announced that morning would be reviewed. Following this announcement, Wellington raised concerns with
Football Australia "seeking further information" about the loan move. Shortly before the start of the 2024–25 season, the League announced the official name of the derby would be "Kiwi Clasico", however, official channels stopped using that name once the season began. On the day of the first ever match between the two clubs,
Te Āti Awa and
Ngāti Whātua presented a special
taonga to be awarded to the winner, and dubbed the derby "Mai te Raki ki te Tonga", which translates to 'From the North to the South' from the
Māori language. ==Organisation==