Gerald Sidney Davis (born February 22, 1953) is an American former umpire in Major League Baseball. He worked in the National League from 1982 to 1999 and in Major League Baseball from 2000 to 2021. He was promoted to crew chief in 1999. Davis has umpired five World Series, nine League Championship Series and eleven League Division Series. He has also worked in the All-Star Game four times. Davis has worn uniform number 12 throughout his career.