Mutsuo Minagawa (皆川睦夫, July 3, 1935 – February 6, 2005^?) was a Japanese professional baseball pitcher. Listed at 5' 10" [1.82 m], 162 lb. [73 k.], Minagawa batted and threw right handed. He was born in Yonezawa, Yamagata.

A tough three quarters, side arm pitcher, Minagawa spent 18 seasons in the Pacific Coast League during three different decades spanning 1954–1971, all of them with the Nankai Hawks, which is currently known as the Softbank Hawks.

By using a wide array of breaking pitches, his command of sliders and screwballs secured him double-digit victories during 11 seasons, including eight consecutive years from 1956 through 1963.

A six-time All-Star, Minagawa also received Best Nine Award honors and was a member of Hawks teams that won six pennant titles and two Japan Series championships. Overall, he posted a career 221-139 record highlighted by a 31-win season in 1968.

Since then there has been no other pitchers in the Nippon Professional Baseball who won 30 or more games in a regular season.

Minagawa debuted in 1954 with Nankai at age 18 and was used sparingly in his first three seasons, being part of the pitching staff of the 1955 Pacific League pennant winner, even though he did not play in the Japan Series. He improved in 1956, ending with a 11-10 mark, 2.17 ERA and 190⅔ innings pitched in 60 appearances, starting 16 games and pitching his first career shutout. Then in 1957 he had 23 outings in 56 appearances, winning 18 games while losing 10. In addition, he posted a 2.64 earned run average for the seventh-best of the league, pitched an eight-best 230⅔ innings, and earned his first All-Star selection.

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