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. He also won the fourth and final game of the 1932 World Series, in which the Yankees defeated the Chicago Cubs. Primarily a relief pitcher, Moore was a member of the Yankee staff during the 1928 World Series as well, but was not needed as the team's starting pitchers threw four consecutive complete games.