The Orioles adopted their team name in honor of the official state bird of Maryland; it had also been used by several previous major and minor league baseball clubs in Baltimore, including another AL charter member franchise also named the "Baltimore Orioles", which moved north in 1903 to eventually become the current Orioles' division rivals New York Yankees. Nicknames for the team include the "O's" and the "Birds".
The Orioles experienced their greatest success from 1966 to 1983, when they made six World Series appearances, winning three of them (1966, 1970, 1983). This era of the club featured several future Hall of Famers who would later be inducted representing the Orioles, such as third baseman Brooks Robinson, outfielder Frank Robinson, starting pitcher Jim Palmer, first baseman Eddie Murray, shortstop Cal Ripken Jr., and manager Earl Weaver. The Orioles have won a total of nine division championships (1969–1971, 1973–1974, 1979, 1983, 1997, 2014), six pennants (1966, 1969–1971, 1979, 1983), and three wild card berths (1996, 2012, 2016).
After suffering a stretch of 14 consecutive losing seasons from 1998 to 2011, the team qualified for the postseason three times under manager Buck Showalter and general manager Dan Duquette, including a division title and advancement to the American League Championship Series for the first time in 17 years in 2014. However, the 2018 team finished with a 47–115 record, prompting the team to move on from Showalter and Duquette following the season's conclusion. The Orioles' current manager is Brandon Hyde, while Mike Elias serves as general manager and executive vice president.
The Orioles are also well known for their influential ballpark, Oriole Park at Camden Yards, which opened in 1992 in downtown Baltimore.