Jenson Alexander Lyons Button MBE (born 19 January 1980) is a British racing driver currently under contract with McLaren-Honda, as a reserve driver. He won the 2009 Formula One World Championship, driving for Brawn GP. Button announced in September 2016 that he would be giving up his 2017 seat at the end of the 2016 Formula One season but announced that he would still be at McLaren as a reserve driver and ambassador of McLaren until the 2018 Formula One season.
Button began karting at the age of eight and achieved early success, before progressing to car racing in the British Formula Ford Championship and the British Formula 3 Championship. He first drove in Formula One with Williams for the 2000 season. The following year he switched to Benetton, which in 2002 became Renault, and then for the 2003 season he moved to BAR. In 2004 he finished 3rd in the World Drivers' Championship, with only the two Ferraris ahead of him. BAR was subsequently renamed Honda for the 2006 season, during which Button won his first Grand Prix in Hungary, after 113 races.
Following the withdrawal of Honda from the sport in December 2008, he was left without a drive for the 2009 season, until Ross Brawn led a management buyout of the team in February 2009, and Button suddenly found himself in a highly competitive, Mercedes-engined car. He went on to win a record-equalling six of the first seven races of the 2009 season, securing the World Drivers' Championship at the Brazilian Grand Prix, having led on points all season; his success also helped Brawn GP to secure the World Constructors' Championship.
For 2010, he moved to McLaren, partnering fellow British racer and former World Champion Lewis Hamilton. After finishing fifth for the team in 2010, Button finished the 2011 season as runner-up. In 2012 he took his first pole for McLaren at the 2012 Belgian Grand Prix. He spent a fifth season with the McLaren team in 2014, his fifteenth in Formula One, and went on to complete two further years at the team in 2015 and 2016 before stepping back from full-time racing to take an ambassadorial and reserve driver role. He returned for a one-off appearance at the 2017 Monaco Grand Prix in place of Fernando Alonso which elevated him to joint second with Michael Schumacher in the list of all-time F1 starts. From the 306 races that Button has started he has won 15, with a total of 50 podium finishes.