The Milwaukee Brewers of 1891 were an American professional baseball team. They were brought into the major-league American Association (AA) from the minor-league Western Association in August 1891 to replace the Cincinnati Kelly's Killers, who had ceased operations on August 17. In their only season as a major-league team, the Brewers finished with a record of 21–15 (.583), finishing with a better winning percentage than all but two teams in the AA--albeit with 100 fewer games played than the other teams. After the season, the AA folded, while the Brewers lasted one season in the Western League before they folded.