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Lost World Series (4-3) to Brooklyn Dodgers |

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Transactions listed are from November 1 of previous year to April 1 of the following year.
October 16, 1954
Purchased Lou Sleater from Toronto (International).
October 19, 1954
Released Ralph Branca.
November 17, 1954
Traded players to be named later, Harry Byrd, Jim McDonald, Willy Miranda, Hal Smith, Gus Triandos and Gene Woodling to the Baltimore Orioles. Received players to be named later, Billy Hunter, Don Larsen and Bob Turley. The New York Yankees sent Bill Miller (December 1, 1954), Kal Segrist (December 1, 1954), Don Leppert (December 1, 1954) and Ted Del Guercio (minors) (December 1, 1954) to the Baltimore Orioles to complete the trade. The Baltimore Orioles sent Mike Blyzka (December 1, 1954), Darrell Johnson (December 1, 1954), Jim Fridley (December 1, 1954) and Dick Kryhoski (December 1, 1954) to the New York Yankees to complete the trade.
November 22, 1954
Art Ceccarelli drafted by the Kansas City Athletics in the 1954 rule 5 draft.
1955
Signed Jim Bronstad as an amateur free agent.
Sold Art Schult to Seattle (PCL).
Signed Bill Short as an amateur free agent.
January 26, 1955
Signed Tom Carroll as an amateur free agent (bonus baby).
March 30, 1955
Sold Tom Gorman, Dick Kryhoski and Ewell Blackwell to the Kansas City Athletics for $50,000.
April 28, 1955 (Standings)
Sold Lou Sleater to the Kansas City Athletics.
May 11, 1955 (Standings)
Art Schallock selected by the Baltimore Orioles off waivers.
Traded Johnny Sain and Enos Slaughter to the Kansas City Athletics. Received Sonny Dixon and cash.
June 30, 1955 (Standings)
Signed Ted Gray as a free agent.
July 20, 1955 (Standings)
Released Ted Gray.
July 30, 1955 (Standings)
Traded Ed Lopat to the Baltimore Orioles. Received Jim McDonald.
September 14, 1955 (Standings)
Selected Jerry Staley off waivers from the Cincinnati Redlegs.
October, 1955 (Standings)
Sent Al Pilarcik to the Kansas City Athletics as part of a conditional deal.
November 27, 1955
Drafted Milt Graff from the Pittsburgh Pirates in the 1955 minor league draft.
Jack McMahan drafted by the Pittsburgh Pirates in the 1955 rule 5 draft.
1956
Signed Deron Johnson as an amateur free agent.
Jim McDonald sent to the Baltimore Orioles in an unknown transaction.
Signed Phil Mudrock as an amateur free agent.
Obtained Marshall Renfroe from St Petersburg (Florida State) as part of a minor league working agreement.
Signed Hal Reniff as an amateur free agent.
Signed Jay Ward as an amateur free agent.
February 8, 1956
Traded a player to be named later, Lou Berberet, Herb Plews, Dick Tettelbach and Bob Wiesler to the Washington Senators. Received Bobby Kline and Mickey McDermott. The New York Yankees sent Whitey Herzog (April 2, 1956) to the Washington Senators to complete the trade.