The 2011–12 season was Manchester United's 20th season in the Premier League, and their 37th consecutive season in the top-flight of English football. United were defending Premier League champions, and aimed for an unprecedented 20th league title this season. Furthermore, they were competing in the Champions League for a 16th successive season. In addition, they were competing in the domestic tournaments, the FA Cup and the League Cup.

Manchester United began the season with a 3–2 win over local rivals Manchester City in the Community Shield at Wembley on 7 August 2011.

2011–12 Manchester United F.C. season

They were, however, knocked out of the League Cup at the Fifth Round stage for the second successive season after losing 2–1 to Crystal Palace at Old Trafford on 30 November 2011.

2011–12 Manchester United F.C. season

On 7 December 2011, United lost 2–1 away to Basel, a result which saw them finish third in their Champions League group. This meant that they competed in the UEFA Europa League (formerly the UEFA Cup) for the first time since the 1995–96 season. However, they only made it as far as the Round of 16, falling to Athletic Bilbao 5–3 on aggregate.

2011–12 Manchester United F.C. season

On 4 January 2012 against Newcastle United, Ryan Giggs broke Sir Bobby Charlton's record for the most starts, the match being Giggs' 757th start.

On 28 January 2012, United were knocked out of the FA Cup in the Fourth Round after losing 2–1 against Liverpool at Anfield.

Going into the last match of the season, on 13 May 2012, United and Manchester City were locked together on 86 points at the top the table, but City led with an eight-goal advantage in goal difference. United therefore needed to better City's result to win the title. They were on course to do this, winning 1–0 at Sunderland, whilst City trailed 2–1 at home to Queens Park Rangers. However, two stoppage time goals from Edin Džeko and Sergio Agüero gave City a 3–2 win and edged United out on goal difference. It was the first time in 23 years that the champions and the runners-up had finished level on points.

The season was the first since 1991–92 without Gary Neville, who retired after the 2010–11 season.

Pre-season and friendlies

Manchester United preceded their 2011–12 campaign with a tour of the United States for the second year in a row. As in 2010, they played in the MLS All-Star Game, in which they took on a team of the best players in Major League Soccer. In the lead-up to this game, which was played on 27 July 2011, United took on the New England Revolution (13 July), the Seattle Sounders (20 July) and the Chicago Fire (23 July), before finishing the tour with a game against Barcelona at FedExField in Washington, D.C., on 30 July.

The club granted a testimonial to Paul Scholes, who retired on 31 May 2011, to honour his 17 years of service to United. The match was played at Old Trafford against New York Cosmos on 5 August 2011. United won the game 6–0 – with Scholes himself opening the scoring the opening goal – to complete an unbeaten pre-season.

The club also granted a testimonial to Harry Gregg, a survivor of the 1958 Munich air disaster, who rescued a 20-month-old girl, her pregnant mother and attempted to revive United manager Sir Matt Busby. The match was played at Windsor Park against Irish League XI on 15 May 2012. The Irish XI was managed by Martin O'Neill and David Jeffrey. United won the game 4–1.

FA Community Shield

As Premier League champions, United began the season against the holders of the FA Cup, local rivals Manchester City in the Community Shield. The match was played at Wembley on 7 August. This was the first time the Shield had been contested by the two clubs in 55 years. United had most of the possession and more shots on goal in the first half, but it was City who took the lead in the 38th minute when Joleon Lescott nodded in a David Silva free-kick. Edin Džeko then doubled City's lead on the stroke of half-time with a low strike from long-distance. However, seven minutes into the second half, Chris Smalling volleyed home an Ashley Young free-kick to reduce the deficit, and then Nani finished off an intricate passing move involving Wayne Rooney and Tom Cleverley in the 58th minute to bring the score back to 2–2. With a penalty shoot-out looming as the game moved into injury time, Nani forced a mistake from City captain Vincent Kompany, outpaced the defence and rounded goalkeeper Joe Hart before sliding the ball into the empty net to seal United's comeback and their 19th FA Community Shield.

Premier League

The fixtures for the 2011–12 league season were announced on 17 June, with United beginning the defence of their title away from home for the first time since 2005–06.