Match ends, Barcelona 5, FC Sevilla 4.
Substitute Pedro scored an extra-time winner as Barcelona won the Uefa Super Cup for a record-equalling fifth time after a nine-goal thriller in Tbilisi.
Europa League winners Sevilla surprised the Champions League holders when Ever Banega netted a delightful free-kick.
Lionel Messi scored two sublime free-kicks to put Barca 2-1 ahead before Rafinha and Luis Suarez made it 4-1.
Jose Antonio Reyes, a Kevin Gameiro penalty and a Yevhen Konoplyanka goal forced extra time before Pedro struck.
Barcelona's first success in the competition since 2011 means they join Italian side AC Milan in winning it five times.
The good, the bad and the ugly
Barca coach Luis Enrique and his players celebrated wildly when Scottish referee Willie Collum blew the final whistle after 01:00 local time.
But the Catalans provided La Liga rivals Real Madrid with much optimism as Rafael Benitez prepares for his first season in charge at the Bernabeu.
Having coasted into a 4-1 lead - with Messi's two sumptuous curling free-kicks the pick of the four goals - Barca capitulated, conceding three times in 24 minutes.
Enrique's side scored 110 goals as they won La Liga last season, and they may have to find just as many if they are to successfully defend the title after their defensive frailties allowed Sevilla back into a game they should have been out of.
Yet Barca's triumph means they have now won four trophies this year after winning the treble last season.
They remain on course to emulate the record-breaking feat of Pep Guardiola's side in 2009 when they won all six trophies available to them.
Barca can secure a fifth trophy of the calendar year when they face Athletic Bilbao in the two-legged Spanish Super Cup, the first leg on Friday with the return at the Nou Camp next Monday.
As European champions, they will also compete in the 2015 Fifa Club World Cup in Japan in December.
Match-winner Pedro has told Barcelona he wants to leave the European champions, according to technical secretary Robert Fernandez.
Manchester United have been heavily linked with a move for the Spain international as they look to replace Angel Di Maria, who joined Paris St-Germain for £44.3m last week.
And having won five league titles and the Champions League three times with Barca, Pedro's days at the Nou Camp appear to be drawing to a close.
If this was his farewell appearance it barely could have been more dramatic, the 28-year-old pouncing on the rebound after Sevilla keeper Beto had denied Messi a hat-trick of free-kick goals.
Enrique opted to leave the long-serving winger on the bench and start with Rafinha, and it was not until extra time that Pedro was sent on.
'We feel frustrated despite winning'
Barcelona defender Javier Mascherano: "For the fans it was a great spectacle and something rarely seen. Aside from the win though we feel frustrated as we had gone ahead and were in control but let it slip.
"I am happy with the win but there is a lot to improve on."
Barcelona match-winner Pedro: "I got the goal but it was down to the work of the team and I am happy with the win."
Man of the match
The stats you need to know
- Pedro has scored two European Super Cup goals, both in extra-time, both in the 115th minute and both winners.
- Sevilla are the only team to have scored four goals in a game against Barcelona with Luis Enrique as manager.
- Luis Suarez has scored or assisted in his three finals for Barcelona.
- Lionel Messi has scored two direct free-kick goals in the same game for the first time in his career.
- Messi has scored 10 goals in his last six games against Sevilla.
- 1ter Stegen
- 6Alves da SilvaBooked at 120mins
- 14MascheranoSubstituted forPedroat 93'minutesBooked at 94mins
- 24MathieuBooked at 71mins
- 5BusquetsBooked at 117mins
- 8IniestaSubstituted forRoberto Carnicerat 63'minutes
- 12RafinhaSubstituted forBartraat 78'minutes
- 20Roberto Carnicer
- 31El Haddadi
- 23Andújar MorenoBooked at 88mins
- 4KrychowiakBooked at 14mins
- 7Krohn-DehliBooked at 120mins
- 19BanegaBooked at 90mins
- 10ReyesSubstituted forKonoplyankaat 68'minutes
- 8IborraSubstituted forFerreira Filhoat 80'minutes
- 20Machín Pérez
- 9GameiroSubstituted forImmobileat 80'minutesBooked at 92mins
- 16Sánchez Benítez
- 17D Suárez
- 25Ferreira Filho
- William Collum
- Shots on Target
Second Half Extra Time ends, Barcelona 5, FC Sevilla 4.
Attempt missed. Adil Rami (FC Sevilla) left footed shot from the left side of the six yard box is close, but misses to the left. Assisted by Ciro Immobile following a set piece situation.
Foul by Luis Suárez (Barcelona).
Mariano (FC Sevilla) wins a free kick on the right wing.
Dani Alves (Barcelona) is shown the yellow card.
Michael Krohn-Dehli (FC Sevilla) is shown the yellow card.
Dani Alves (Barcelona) wins a free kick on the right wing.
Foul by Michael Krohn-Dehli (FC Sevilla).
Attempt missed. Coke (FC Sevilla) header from the centre of the box is close, but misses to the left. Assisted by Éver Banega following a set piece situation.
Sergio Busquets (Barcelona) is shown the yellow card for a bad foul.
Foul by Sergio Busquets (Barcelona).
Yevhen Konoplyanka (FC Sevilla) wins a free kick in the attacking half.
Goal! Barcelona 5, FC Sevilla 4. Pedro (Barcelona) left footed shot from the left side of the six yard box to the top left corner following a set piece situation.
Attempt saved. Lionel Messi (Barcelona) left footed shot from outside the box is saved in the bottom left corner.
Attempt blocked. Lionel Messi (Barcelona) left footed shot from outside the box is blocked.
Lionel Messi (Barcelona) wins a free kick in the attacking half.
Foul by Mariano (FC Sevilla).
Corner, Barcelona. Conceded by Coke.
Lionel Messi (Barcelona) wins a free kick on the right wing.