List of 1956–57 NBA season transactions

This is a list of all personnel changes for the 1956 NBA off-season and 1956–57 NBA season.

July 23, 1956

 * The Rochester Royals signed Lew Hitch as a free agent.

August 31, 1956

 * The Boston Celtics claimed Andy Phillip on waivers from the Fort Wayne Pistons.

September 11, 1956

 * The St. Louis Hawks signed Irv Bemoras as a free agent.

October 3, 1956

 * The Syracuse Nationals sold Billy Kenville to the Fort Wayne Pistons.

October 23, 1956

 * The Syracuse Nationals sold Red Rocha to the Fort Wayne Pistons.

October 24, 1956

 * The Minneapolis Lakers sold Al Bianchi to the Syracuse Nationals.

October 26, 1956

 * The New York Knicks traded Walter Dukes and Burdette Haldorson to the Minneapolis Lakers for Jerry Bird, Phil Jordon and Slater Martin.

November 15, 1956

 * The Syracuse Nationals signed Larry Hennessy as a free agent.
 * The Syracuse Nationals signed Bob Schafer as a free agent.
 * The St. Louis Hawks claimed Odie Spears on waivers from the Fort Wayne Pistons.

November 29, 1956

 * The Boston Celtics sold Togo Palazzi to the Syracuse Nationals.

December 2, 1956

 * The St. Louis Hawks sold Bob Harrison to the Syracuse Nationals.

December 12, 1956

 * The St. Louis Hawks traded Willie Naulls to the New York Knicks for Slater Martin.
 * The Fort Wayne Pistons released Alex Hannum.

December 17, 1956

 * The St. Louis Hawks signed Alex Hannum as a free agent.

January 4, 1957

 * The Rochester Royals sold Lew Hitch to the Philadelphia Warriors.

January 7, 1957

 * The St. Louis Hawks fired Red Holzman as head coach.

January 8, 1957

 * The St. Louis Hawks appointed Slater Martin as head coach.

January 21, 1957

 * The St. Louis Hawks hired Alex Hannum as head coach.

April 3, 1957

 * The New York Knicks traded Dick Atha, Nathaniel Clifton and Harry Gallatin to the Fort Wayne Pistons for Mel Hutchins and Charlie Tyra.
 * The New York Knicks traded Dick McGuire to the Fort Wayne Pistons for a 1958 1st round draft pick (Mike Farmer was later selected).

April 17, 1957

 * The Minneapolis Lakers traded Clyde Lovellette and Jim Paxson to the Rochester Royals for Bob Burrow, Ed Fleming, Hot Rod Hundley, Monk Meineke and Art Spoelstra.

May 14, 1957

 * The Fort Wayne Pistons traded Corky Devlin to the Minneapolis Lakers for Ed Kalafat.

June 19, 1957

 * The Minneapolis Lakers reassigned Head Coach John Kundla.
 * The Minneapolis Lakers hired George Mikan as head coach.