Helen Nicol (born May 9, 1920) is a Canadian former baseball pitcher who played from 1943 through 1952 in the All-American Girls Professional Baseball League (AAGPBL). Listed at 5 feet 3 inches (1.60 m), 120 pounds (54 kg), Nicol batted and threw right-handed. She sometimes credited as Helen Fox or Nickie Fox.

The 1992 film A League of Their Own, directed by filmmaker Penny Marshall, revitalized interest in feminine baseball and helped memorialize a neglected chapter of sports history: the All-American Girls Professional Baseball League, which gave over 600 women athletes the opportunity to play professional baseball and to play it at a level never before attained. Nicol was just one of them.

A native of Ardley, Alberta, Canada, Nicol has been catalogued by many as one of the greatest pitcher in AAGPBL history. She holds several all-time pitching records, including appearances (313), wins (163), consecutive wins (13), strikeouts (1,076), batters faced (7,537), and innings pitched (2,382). In addition, she posted a 13-7 record with a 1.83 earned run average in postseason games.

Nicol entered the AAGPBL in 1943 with the Kenosha Comets, playing for them through the 1947 midseason before joining the Rockford Peaches (1947–1952). She enjoyed a solid first season, leading the league with 31 wins, a 1.81 ERA, 220 strikeouts, eight shutouts and 348 innings of work, including the aforementioned string of (13) wins in a row. Though she failed in the playoffs, after going 0-2 with a 4.50 ERA against the eventual champion Racine Belles. After the end of the season, she was selected for the All-Star Team and was honored as Pitcher of the Year.

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