The Milwaukee Brewers' 2003 season involved the Brewers' finishing sixth in the National League Central with a record of 68 wins and 94 losses.

Offseason

Regular season

Season standings

National League Central

Record vs. opponents

Transactions

Roster

Players stats

Batting

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''

Pitching

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

Farm system

The Brewers' farm system consisted of eight minor league affiliates in 2003. The Brewers operated a Venezuelan Summer League team as a co-op with the Cincinnati Reds.