He won it once, in 2008.
Jenson Button won the 2008 season for Brawn GP, who also won the Constructor's Championship.
Nico Rosbeg won the 2016 F1 World Championship, the first time in his career.
Nico Rosberg won the 2016 F1 Championship.
Lewis has won one F1 World championship in the year 2008 (This year)
Lewis hamilton won his 1st F1 Championship in 2008.
Sebastian vettel won the drivers championship and red bull racing won the constructors championship.
Lewis Hamilton won the 2008 F1 world championships from Phillipe Massa by one point. *Felipe Massa*