William Womble Harrington (October 3, 1928 – January 21, 2022) was an American professional baseball pitcher.

He appeared in 58 games (all but two in relief) in Major League Baseball (MLB) for the Philadelphia and Kansas City Athletics during the 1953, 1955 and 1956 seasons.

He threw and batted right-handed, stood 5 feet 11 inches (1.80 m) tall and weighed 160 pounds (73 kg).

[2] He spent the entire 1955 campaign on the Athletics' roster and put up his best year, splitting six decisions with an earned run average of 4.11 in 34 games and 76⅔ innings pitched.

During his major league career, Harrington issued 67 walks and gave up 114 hits, with 40 strikeouts in 116⅓ innings pitched.