The 31-year-old joined McLaren as world champion in 2010 after having clinched the title with Brawn GP the year before.
Button, who is second behind Red Bull’s Sebastian Vettel in this year’s standings, has won four races with the Woking-based outfit – his latest triumph coming at the Hungarian Grand Prix in July.
“I’ve never felt more at home at a team than I do at McLaren,” Button said. â€ª”I’ve won four of the greatest races of my life here, I’m currently lying second in the drivers’ world championship, and I feel that I’m driving better than ever.
“You can only achieve that with the right level of support – and I truly believe that the passion and determination to win are stronger here at McLaren than anywhere else.
“As a grand prix driver, those are incredibly powerful feelings to share and be part of, and they’ve only reinforced my desire to commit my long-term future to this team.
“I’ve made no secret of my ambition to continue winning races and world championships, and I fully believe this is the place where I can achieve those aims.
Team principal Martin Whitmarsh is confident Button will enjoy a successful future with McLaren. He said: “Jenson is a great driver and a great guy.
“In fact, I can safely say that he’s one of the most capable and respected drivers we’ve ever had, and I’m therefore absolutely delighted that he’ll continue to work with us into the future.
“He’s a considerable credit to this organisation, and I’m proud to be his team principal. I feel sure that he’ll now build on the considerable success he’s already achieved with us, and will be even more successful with us in years to come.”
And Button’s team-mate Lewis Hamilton welcomed the news of the deal. He said: “It’s great news that Jenson has chosen to stay with McLaren.
“Jenson has been a great person to work with, and a genuine team-player, from the moment we welcomed him on board.
“McLaren is a team with a unique and successful tradition in Formula 1, which I’m proud to be part of.
“It was the best moment of my career when I won the drivers’ world championship with this team. Jenson and I are as hungry and as ambitious as ever to win races and world championships in the future.”
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