Coach Pep Guardiola won his second European Cup as a manager in three years after a dominant performance from his side.
Barca reached the final after defeating El Clasico rivals Real Madrid in the last four, with United sweeping aside Schalke 6-1 in their semi-final.
The Catalan club outplayed United in the first half, enjoying 68 per cent possession and having 22 shots, but were still level at half-time as Pedro’s opener was cancelled out by Wayne Rooney, who side-footed home from 15 yards after a one-two with Ryan Giggs.
Barcelona’s dominance continued after the break with Messi, who moments earlier had seen a shot cleared off the line by Patrice Evra, firing in a low shot from 25 yards.
Messi’s dribbling then caused panic in the United defence and David Villa capitalised to whip a shot into the top corner from just outside the penalty area and secure Barcelona’s third Champions League title in six years.
Eric Abidal, who had undergone surgery only two months earlier to remove a tumour in his liver, was given the honour of wearing the captain’s armband during the trophy presentation ceremony and he was the first player to lift the trophy.
After the match Guardiola hailed Messi as “the best player I have ever seen” while United boss Sir Alex Ferguson conceded: “In my time as manager it is the best team we have faced.”
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