John Rooney (born January 30, 1955) is an American sportscaster, currently best known as a play-by-play announcer for radio broadcasts of Major League Baseball's St. Louis Cardinals.

He also called Missouri Tigers men's basketball for many years and did Chicago Bulls radio from 1989 to 1991.

In September 2005, it was announced that Rooney would be leaving the White Sox' radio crew after 18 years due to a salary dispute with their new flagship station.

The following season, he joined the Cardinals' radio crew on KTRS, teaming with former player and veteran broadcaster Mike Shannon.

The Cardinals won the 2006 World Series, so Rooney called successive championship seasons for different teams—a major league first.