1991 St. Louis Cardinals season

The St. Louis Cardinals 1991 season was the team's 110th season in St. Louis, Missouri and the 100th season in the National League. The Cardinals rebounded from a rare last-place finish a year earlier to register a record of 84–78 during the season and finished second to the Pittsburgh Pirates in the National League East by fourteen games.

Ozzie Smith set the National League record for fewest errors in a season by a shortstop with 8 errors. Gold Gloves were awarded to catcher Tom Pagnozzi and shortstop Ozzie Smith this year.

Offseason

 * October 11, 1990: Ernie Camacho was released by the St. Louis Cardinals.

Opening Day starters

 * Bernard Gilkey
 * Pedro Guerrero
 * Felix Jose
 * Ray Lankford
 * José Oquendo
 * Tom Pagnozzi
 * Ozzie Smith
 * Bob Tewksbury
 * Todd Zeile

Transactions
June 3, 1991: John Mabry was drafted by the St. Louis Cardinals in the 6th round of the 1991 amateur draft. Player signed June 11, 1991.

Batting
''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters
Note; G = Games played; AB = At bats; H = Hits; Avg.= Batting average; HR = Home runs; RBI = Runs batted in

Starting pitchers
Note: G = Games pitched; IP = Innings pitched: W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Awards and honors

 * Tom Pagnozzi, catcher, National League Gold Glove
 * Ozzie Smith, shortstop, National League Gold Glove