Johnny Reginald Davis (born October 21, 1955) is an American former professional basketball player and coach in the National Basketball Association (NBA).

He played in the NBA with four teams in ten years from 1976 to 1986, winning an NBA championship in his rookie season (1976–77) with the Portland Trail Blazers.

He also played for the Indiana Pacers, the Atlanta Hawks, and the Cleveland Cavaliers.

Davis had previously served as an assistant coach with the Atlanta Hawks, Los Angeles Clippers, Portland Trail Blazers, New Jersey Nets, Orlando Magic, Minnesota Timberwolves, Indiana Pacers, Memphis Grizzlies, Toronto Raptors, and Los Angeles Lakers.

On January 22, 2009, Iavaroni was fired by Memphis GM Chris Wallace, and Davis was named interim head coach of the Grizzlies.