The 2009 FA Cup final was the 128th final of the world's oldest domestic football cup competition, the FA Cup. The final was played at Wembley Stadium in London on 30 May 2009 and marked the third time that the final has been staged at the stadium since it was rebuilt. The match was contested by Chelsea, who beat Arsenal 2–1 in their semi-final, and Everton who beat Manchester United 4–2 on penalties after a 0–0 draw after extra time. After Louis Saha opened the scoring after just 25 seconds, which is the second fastest ever goal in an FA Cup Final, Didier Drogba equalised in the 21st minute before Frank Lampard scored the winner with 19 minutes left to play to give Chelsea their fifth FA Cup success.

Chelsea went into the match as four-time FA Cup winners, having previously won in 1970, 1997, 2000 and 2007, while Everton had won the competition five times previously, having won in 1906, 1933, 1966, 1984 and 1995. Coincidentally, both teams' most recent titles came in the FA Cup, both teams beating Manchester United in the final; Everton in 1995 and Chelsea in 2007.

The two teams drew 0–0 in both meetings during the 2008–09 Premier League season, at Goodison Park in December and at Stamford Bridge in April. Prior to the 2009 final, the two teams had never met in the FA Cup Final; their most recent meeting in the FA Cup came in the Fourth Round of the 2005–06 competition, when Chelsea won 4–1 in a replay at Stamford Bridge after a 1–1 draw at Goodison Park. In 157 matches between the two sides in all competitions, Chelsea had recorded 61 wins, Everton had won 49, and 47 matches finished as draws.

Everton and Chelsea were each allocated 25,109 tickets for the final. Having sold over 32,000 for their semi-final win over Manchester United, Everton were unhappy and disappointed with this allocation. The match was Everton's first FA Cup final in 14 years and Everton chief executive Robert Elstone predicted that the club could have sold in excess of 70,000 tickets for this game. Chelsea also said that the size of their allocation meant that it was unlikely that there would be sufficient tickets for all of their hospitality and non-hospitality season ticket holders.

Club Wembley ten-year season ticket holders were also guaranteed a ticket for the match. After those tickets were allocated, 70% of the remaining tickets were distributed amongst the clubs that had competed in the 2008–09 competition, with the other 30% given to those involved in grassroots football and the "football family".

Since both finalists' first-choice kits are predominantly blue, a coin was tossed to determine which team would have the first choice of kit. Everton won the toss and chose to wear their traditional blue kit, meaning that Chelsea would wear their all-yellow third-choice kit. Chelsea were nevertheless given the "home" dressing room, i.e. that used by the England national team.

The official match ball of the 2009 FA Cup Final was the Umbro Dynamis. The Dynamis uses a 20-panel configuration, as opposed to a more traditional 32-panel design, which allegedly makes the ball faster. The surface of the ball is made from a Teijin microfibre material. The Dynamis was also used in the 2008 final, but the 2009 version has a gold colourway.

The traditional FA Cup Final song, Abide With Me, was performed by the London Community Gospel Choir. The trophy was then brought out onto the field, followed by the two teams, before the Chief Guest of the final – former Secretary General of the United Nations Kofi Annan – was introduced to the managers and players of both teams, as well as the match officials. The introductions were immediately followed by the singing of the national anthem, "God Save the Queen", sung by Britain's Got Talent 2008 finalist, 13-year-old Faryl Smith, making her the youngest performer of the national anthem at the FA Cup final.