1888 St. Louis Browns season

The 1888 St. Louis Browns season was the team's seventh season in St. Louis, Missouri, and its seventh season in the American Association. The Browns went 92–43 during the season and finished first in the American Association, claiming their fourth pennant in a row. In the 1888 World Series, the Browns faced the National League champion New York Giants, losing the series 6 games to 4.

Starters by position
''Note: Pos = Position; 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