Scherzer lost only three times and was the lone 20-game winner in baseball. He ranked second in the majors with 240 strikeouts and was fifth in the AL with a 2.90 ERA.
Scherzer drew 28 of the 30 first-place votes in balloting by members of the Baseball Writers’ Association of America.
The NL winner was to be announced later Wednesday evening.
The 29-year-old Scherzer won his first 13 decisions of the season and was the American League starter in the All-Star game.
Scherzer went 16-7 last year, then added a curveball to an impressive repertoire that already included a hard fastball, slider and changeup.
Voting for the award was done before the playoffs began. Scherzer twice beat Oakland in the AL division series, then went 0-1 in two starts against Boston in the AL championship series _ he was pulled both times with the Tigers ahead.
Scherzer is distinctive for more than just his record. His eyes are different colors, with the right blue and left brown.