2011 Port Adelaide Football Club season
The 2011 AFL season was the 15th season contested by the Port Adelaide Football Club, and was Matthew Primus's first full year as senior coach of the club.
Domenic Cassisi was confirmed to retain the captaincy for the 2011 season as part of a seven-man leadership group.
Port Adelaide recorded its worst ever season in the AFL, with only three wins in the year, against in Round 4, in Round 10, and in Round 24. They also became the first team to lose to expansion club after Port's Justin Westhoff missed a kick after the siren that would have won the game for Port Adelaide. Port narrowly avoided last place on the ladder and the wooden spoon with their final round win over Melbourne, which lifted them above on the ladder.
2011 results
Pre-season
NAB Cup
Group stages
NAB Challenge
First round
Second round
Third round
Home and Away season
Round 8
Round 16
Awards and milestones
| Player | Milestone | Reached |
| Jasper Pittard | AFL Debut | |
| Cam O'Shea | AFL Debut | |
| Jarrad Irons | AFL Debut | |
| Matt Thomas | 50th Game | |
| Dean Brogan | 50th Goal | |
| Robbie Gray | 50th Game | |
| Cam O'Shea | 1st Goal | |
| Justin Westhoff | 100th Goal | |
| Daniel Motlop | 200th Goal | |
| Simon Phillips | Club Debut | |
| Jasper Pittard | 1st Goal | |
| Simon Phillips | 1st Club Goal | |
| Ben Jacobs | AFL Debut | |
| Ben Jacobs | 1st Goal | |
| Jay Schulz | 100th Goal | |
| Andrew Moore | 1st Goal | |
| Michael Pettigrew | 100th Game | |
| John Butcher | AFL Debut and 1st Goal |