1959 Baltimore Orioles season

The 1959 Baltimore Orioles season was the franchise's sixth season in Baltimore, Maryland, and its 59th overall. It resulted with the Orioles finishing sixth in the American League with a record of 74 wins and 80 losses, 22 games behind the AL champion Chicago White Sox.

Offseason

 * October 2, 1958: Dick Williams was traded by the Orioles to the Kansas City Athletics for Chico Carrasquel.
 * Prior to 1959 season (exact date unknown)
 * John Anderson was obtained by the Orioles from the Miami Marlins after expiration of minor league working agreement.
 * Bob Saverine was signed as an amateur free agent by the Orioles.

Regular season

 * June 10, 1959: Rocky Colavito of the Cleveland Indians hit four home runs in one game against the Orioles.

Opening Day starters

 * Bob Boyd
 * Billy Gardner
 * Ron Hansen
 * Al Pilarcik
 * Arnie Portocarrero
 * Brooks Robinson
 * Willie Tasby
 * Gus Triandos
 * Gene Woodling

Notable transactions

 * April 1, 1959: Vito Valentinetti was acquired by the Orioles from the Washington Senators in exchange for Billy Loes. The trade was voided and the players returned to their original teams on April 8.
 * May 21, 1959: Bobby Ávila was acquired by the Boston Red Sox from the Orioles off waivers.
 * May 26, 1959: Albie Pearson was acquired by the Orioles from the Washington Senators in exchange for Lenny Green.
 * June 15, 1959: Billy Hoeft was acquired by the Orioles from the Boston Red Sox in exchange for Jack Harshman.
 * June 23, 1959: Whitey Lockman was traded by the Orioles to the Cincinnati Redlegs for Walt Dropo.
 * September 6, 1959: Rip Coleman was acquired by the Orioles off waivers from the Kansas City Athletics.

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

Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts