Coby Joseph Dietrick (born July 23, 1948) is an American former professional basketball player.

Dietrick played college basketball for the San Jose State Spartans, where he was a second-team All-Pacific Coast Athletic Association selection in 1970.

Dietrick spent the majority of his career with the San Antonio Spurs, a team that began in the ABA but joined the NBA after the ABA-NBA merger in 1976.

He also opened the first Relax The Back franchise store in San Antonio in 1989.

[2] This biographical article relating to a United States basketball player, coach, or other figure born in the 1940s is a stub.