The 1958 Baltimore Orioles season involved the Orioles finishing 6th in the American League with a record of 74 wins and 79 losses, 17.5 games behind the AL and World Series champion New York Yankees. The team was managed by Paul Richards, and played their home games at Baltimore's Memorial Stadium, which hosted the All-Star Game that season. During the 1958 season, Gus Triandos hit 30 home runs, setting a Baltimore Orioles franchise record (since broken) for most home runs in one season.

Offseason

Regular season

On June 6, 1958, Orioles president James Keelty, Jr. reached agreement with Miami Marlins president George B. Storer to move the Orioles' spring training home from Scottsdale, Arizona to Miami Stadium for the 1959 spring training season. On September 20, pitcher Hoyt Wilhelm struck out eight batters while throwing a no-hitter against the New York Yankees. It was the first no-hitter in Baltimore Orioles history, as Gus Triandos contributed a home run in the 1–0 win.

Season standings

Record vs. opponents

Notable transactions

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

Relief pitchers

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

Farm system