The 2007–08 A-League was the third season of the Australian A-League soccer competition since its establishment in 2004. Football Federation Australia hoped to build on the success of the previous two seasons and on the interest generated by Sydney FC and Adelaide United playing in the 2007 AFC Champions League, and the Socceroos competing in the 2007 AFC Asian Cup.
Based on their A-League 2006-07 season performances Adelaide United and Melbourne Victory competed in the 2008 AFC Champions League, making it two consecutive seasons in the competition for Adelaide United. Based on the 2007–08 season of the A-League, the Central Coast Mariners and Newcastle Jets qualified for the 2009 AFC Champions League, as the competition's Premiers and Champions respectively.
Changes included:
The following do not fill a Visa position:
1Those players who were born and started their professional career abroad but have since gained Australian Residency (and New Zealand Residency, in the case of Wellington Phoenix);
2Australian residents (and New Zealand residents, in the case of Wellington Phoenix) who have chosen to represent another national team;
3Injury Replacement Players, or National Team Replacement Players;
4Guest Players (eligible to play a maximum of ten games)