- Source: 1891 Baltimore Orioles season
- 1891 Baltimore Orioles season
- Baltimore Orioles (1882–1899)
- Baltimore Orioles (minor league)
- Union Park (Baltimore)
- Oriole Park
- 1890 Baltimore Orioles season
- Baltimore Orioles (Atlantic Association)
- List of defunct and relocated Major League Baseball teams
- 1892 Baltimore Orioles season
- List of Baltimore Orioles (1882–1899) Opening Day starting pitchers
In their last season in the American Association, the 1891 Baltimore Orioles finished in fourth place (third among teams that played a full schedule) with a record of 71–64. After the season, the AA folded, and the Orioles joined the National League.
Regular season
= Season standings
== Record vs. opponents
== Roster
=Player 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
References
1891 Baltimore Orioles season at Baseball Reference
1891 Baltimore Orioles team page at www.baseball-almanac.com