William Wilcy "Cy" Moore (May 20, 1897 – March 29, 1963) was a professional baseball right-handed pitcher over parts of six seasons (1927–1933) with the New York Yankees and Boston Red Sox. He led the American League in ERA as a rookie in 1927 while playing for New York.
For his career, he compiled a 51–44 record, with a 3.70 ERA and 204 strikeouts. Moore pitched in the 1927 and 1932 World Series, going 2–0 in three appearances with a 0.56 ERA, as the Yankees won both years.
While being scouted in 1926, Moore claimed he was 27, but records have proven that his actual age was then 29.