| Country: | Australia |
| Season: | 2009–10 |
| Division1: | A-League Premiership |
| Champions1: | Sydney FC (1st title) |
| Division2: | A-League Championship |
| Champions2: | Sydney FC (2nd title) |
| Wdivision1: | W-League Premiership |
| Wchampions1: | Sydney FC |
| Wdivision2: | W-League Championship |
| Wchampions2: | Sydney FC |
| Prevseason: | 2008–09 |
| Nextseason: | 2010–11 |
| Flagicon: | yes |
| Soccer: | yes |
The 2009–10 season was the 41st season of national competitive association football in Australia and 127th overall.
See main article: 2011 AFC Asian Cup qualification.
See main article: 2010 FIFA World Cup.
See main article: 2010 FIFA World Cup Group D.
See main article: 2009 AFF U-19 Youth Championship.
See main article: 2009 FIFA U-20 World Cup.
See main article: 2010 AFC U-19 Championship qualification.
See main article: 2010 AFC U-16 Championship qualification.
See main article: 2010 AFC Women's Asian Cup.
See main article: 2009 AFC U-19 Women's Championship.
See main article: 2009 AFF U-16 Women's Championship.
See main article: 2009 AFC U-16 Women's Championship.
See main article: 2009–10 A-League.
See main article: 2010 A-League Grand Final.
See main article: 2010 NSW Premier League season.
See main article: NBN State Football League.
See main article: Queensland State League (association football).
See main article: 2010 Victorian Premier League.
See main article: Southern Premier League (Tasmania).
See main article: Northern Premier League (Tasmania).
See main article: South Australian Super League.
See main article: Football West Premier League.
See main article: ACT Premier League.
See main article: Football Federation Northern Territory.
| Club | Competition | Final round | |
|---|---|---|---|
| Melbourne Victory | 2010 AFC Champions League | Group Stage | |
| Adelaide United | 2010 AFC Champions League | Round of 16 |