Eugene Anthony Clines (October 6, 1946 – January 27, 2022) was an American professional baseball player and coach.

He played in Major League Baseball (MLB) as an outfielder from 1970 to 1979, most prominently as a member of the Pittsburgh Pirates teams that won four National League Eastern Division titles in five seasons between 1970 and 1974, and won the World Series in 1971.

After his playing career, Clines served as a coach for various clubs, including the Cubs, Houston Astros, Seattle Mariners, Milwaukee Brewers, and San Francisco Giants, and an advisor with the Los Angeles Dodgers later in his career.

[2] A fast runner with excellent defensive skills, Clines debuted in 1970 with the Pirates as a reserve outfielder, hitting .405 (15-for-37) in 31 games in his rookie year.

[5] Before the 1977 season, the Rangers sent Clines to the Chicago Cubs as the player to be named later in the earlier trade for Darold Knowles.

[9] He stayed on Chicago's coaching staff until 1981, and then joined the Houston Astros organization as a roving minor league hitting instructor, a position he held through 1987.