John Allen Denny (born November 8, 1952) is an American former professional baseball right-handed pitcher who played in Major League Baseball (MLB) for the St. Louis Cardinals, Cleveland Indians, Philadelphia Phillies, and Cincinnati Reds, from 1974 to 1986.

[1] Denny won the National League (NL) Cy Young Award, in 1983.

Denny also pitched well in 1978, going 14–11 with a 2.96 ERA, but he fell off badly in 1979 and was traded with Jerry Mumphrey from the Cardinals to the Indians for Bobby Bonds on December 7, 1979.

He pitched three straight shutouts late in 1981[5] and was rewarded with a three-year, $2 million contract after the season.

After an 11–14 campaign, he was dealt along with Jeff Gray from the Phillies to the Reds for Tom Hume and Gary Redus on December 11, 1985.