William Benton Piercy (May 2, 1896 – August 28, 1951), born in El Monte, California, was a pitcher for the New York Yankees (1917 and 1921), Boston Red Sox (1922–24) and Chicago Cubs (1926).
Piercy helped the Yankees win the 1921 American League pennant.
In 6 seasons, he had a 27–43 win–loss record, 116 games (70 started), 28 complete games, 2 shutouts, 30 games finished, 610+2⁄3 innings pitched, 676 hits allowed, 362 runs allowed, 289 earned runs allowed, 16 home runs allowed, 268 walks allowed, 165 strikeouts, 43 hit batsmen, 21 wild pitches, 2180 batters faced, 1 balk, and a 4.26 ERA.
He died in Long Beach, California, at the age of 55.