1959 Washington Senators season

The 1959 Washington Senators won 63 games, lost 91, and finished in eighth place in the American League, 31 games behind the AL Champion Chicago White Sox in their penultimate season in The Nation's Capital. They were managed by Cookie Lavagetto and played home games at Griffith Stadium.

Regular season
On September 7, Ron Samford hit a home run in the last at bat of his career.

Pedro Ramos led the American League in losses.

Notable transactions

 * April 1, 1959: Vito Valentinetti was traded by the Senators to the Baltimore Orioles for Billy Loes. The trade was voided and the players returned to their original teams on April 8.
 * July 25, 1959: Jay Porter was selected off waivers from the Senators by the St. Louis Cardinals.

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