David Allen Tomlin (born June 22, 1949) is a retired American professional baseball player. During his 13-season career in Major League Baseball, he was a relief pitcher for the Cincinnati Reds (1972–73 and 1978–80), San Diego Padres (1974–77), Montreal Expos (1982 and 1986) and Pittsburgh Pirates (1983 and 1985). He also had a lengthy post-playing career as a pitching coach in the minor leagues.