Donald Johnson Eaddy (February 16, 1934 – July 9, 2008) was an American baseball, football, and basketball player.

The halfback was the player with principal passing responsibility in the Michigan offense of the late 1940s and early 1950s.

In 1955, he compiled a .353 batting average in Big Ten play and led the conference with 11 stolen bases in 15 games.

He explained his choice as follows: "I thought I would have a better chance to reach the major leagues sooner with them, because they are not loaded with material.

[6] After a fast start with Des Moines in 1956, Eaddy's career was interrupted when he was drafted to serve in the United States Air Force.

He made his major league debut with the Cubs as a pinch runner on April 24, 1959, and appeared in 15 games during the 1959 season.

He was used principally as a pinch runner, and his only appearance as a position player in the major leagues was on August 1, 1959, as a third baseman.

He had his best minor league season in 1960 at Lancaster, batting .304 in 457 plate appearances with a .425 on-base percentage, 17 doubles, eight triples, eight home runs, 33 RBIs and nine stolen bases.

He led the Cuban league in bases on balls and helped lead the Cienfuegos to the 1960 Caribbean Series title.