| Postseason: |
Won World Series (4-3) over Brooklyn Dodgers |

Robert McClaren sponsor(s) this page.
Hats off to Don Larsen's perfect game.
Transactions listed are from November 1 of previous year to April 1 of the following year.
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.
May 18, 1956 (Standings)
Released Jim Konstanty.
May 28, 1956 (Standings)
Jerry Staley selected by the Chicago White Sox off waivers.
June 14, 1956 (Standings)
Traded Eddie Robinson and Lou Skizas to the Kansas City Athletics. Received Moe Burtschy, Bill Renna and cash.
June 15, 1956 (Standings)
Signed Bud Zipfel as an amateur free agent.
July 11, 1956 (Standings)
Traded Wally Burnette to the Kansas City Athletics. Received Tommy Lasorda.
August 22, 1956 (Standings)
Selected George Wilson off waivers from the New York Giants.
August 25, 1956 (Standings)
Released Phil Rizzuto.
Selected Enos Slaughter off waivers from the Kansas City Athletics.
October, 1956 (Standings)
Purchased Bob Oldis from the Washington Senators.
October 15, 1956 (Standings)
Sold Bob Cerv to the Kansas City Athletics.
December 3, 1956
Lloyd Merritt drafted by the St. Louis Cardinals in the 1956 rule 5 draft.
Cal Neeman drafted by the Chicago Cubs in the 1956 rule 5 draft.
December 11, 1956
Traded Charlie Silvera and cash and another player to be named to the Chicago Cubs. Received a player to be named later. The Chicago Cubs sent Harry Chiti (December 14, 1956) to the New York Yankees to complete the trade.
1957
Signed George Banks as an amateur free agent.
Signed Phil Linz as an amateur free agent.
Signed Bill Stafford as an amateur free agent.
January, 1957
Purchased Don Bradey from the Detroit Tigers.
February 19, 1957
Traded a player to be named later, Rip Coleman, Milt Graff, Billy Hunter, Mickey McDermott, Tom Morgan and Irv Noren to the Kansas City Athletics. Received players to be named later, Wayne Belardi, Art Ditmar, Jack McMahan and Bobby Shantz. The New York Yankees sent Jack Urban (April 5, 1957) to the Kansas City Athletics to complete the trade. The Kansas City Athletics sent Curt Roberts (April 4, 1957) and Clete Boyer (June 4, 1957) to the New York Yankees to complete the trade.
March 14, 1957
Traded Bill Renna to the Boston Red Sox. Received Eli Grba and Gordie Windhorn.