Charles Michael "Mickey" Harrington (October 8, 1934 – September 20, 2017) was an American professional baseball player who appeared in one game in Major League Baseball (MLB) for the Philadelphia Phillies.

He threw and batted right-handed, stood 6 feet 4 inches (1.93 m) tall and weighed 205 pounds (93 kg).

[2] After signing with the Phillies' organization, he was recalled from Triple-A in the midst of his seventh pro season.

His MLB appearance came on July 10, 1963, at Connie Mack Stadium, when he was called upon to pinch run following first baseman Roy Sievers' single; it was the eighth inning and the Phils led the San Francisco Giants, 10–2.

[3] Harrington did not stay in the game on defense, as veteran Frank Torre took Sievers' post at first base in the ninth.