The 2011–12 season was Aberdeen's 99th season in the top flight of Scottish football. Aberdeen competed in the Scottish Premier League, Scottish Cup and Scottish League Cup. Aberdeen were knocked out of the Scottish League Cup at the third round stage, losing on penalties to East Fife after a 3–3 draw. In the Scottish Cup, Aberdeen lost 1–2 to Hibernian in the semi-final. Aberdeen finished in 9th place in the Scottish Premier League.
Aberdeen entered the Scottish League Cup in the second round stage, having not qualified for Europe in 2010–11. Darren Mackie scored the only goal of the game, as Aberdeen defeated First Division opponents Dundee. Aberdeen were knocked out in the third round by Second Division club East Fife.