| 2009 AFL premiership season | |
|---|---|
 | |
| Teams | 16 |
| Premiers | Geelong 8th premiership |
| Minor premiers | St Kilda 3rd minor premiership |
| Pre-season cup | Geelong 2nd pre-season cup win |
| Brownlow Medallist | Gary Ablett, Jr. Geelong (30 votes) |
| Coleman Medallist | Brendan Fevola Carlton (86 goals) |
| Attendance | |
| Matches played | 185 |
| Total attendance | 6,988,638 (37,776 per match) |
| Highest | 99,251 (Grand Final, St Kilda vs. Geelong) |
The 2009 AFL season was the 113th season of the Australian Football League (AFL), the highest level senior Australian rules football competition in Australia, which was known as the Victorian Football League until 1989. The season featured sixteen clubs, ran from 26 March until 26 September, and comprised a 22-game home-and-away season followed by a finals series featuring the top eight clubs.
The premiership was won by the Geelong Football Club for the eighth time, after it defeated St Kilda by twelve points in the 2009 AFL Grand Final.