John Mark Bailey (born November 4, 1961) is a former catcher in Major League Baseball who played for the Houston Astros and San Francisco Giants.
Bailey attended Missouri State University.
In 1981, he played collegiate summer baseball with the Wareham Gatemen of the Cape Cod Baseball League.In 340 games over 7 major league seasons, Bailey posted a .220 batting average (209-for-949) with 101 runs, 24 home runs and 101 RBI.
Bailey is a current pitching coach for the Astros, having served in some capacity with the franchise for the last 17 seasons.