List of 1970–71 NBA season transactions

These are the list of personnel changes in the NBA from the 1970–71 NBA season.

July 8, 1970

 * The Phoenix Suns traded Heywood Dotson to the New York Knicks for a 1971 5th round draft pick (Bob Kissane was later selected).

July 27, 1970

 * The Phoenix Suns waived Neil Johnson.

August 28, 1970

 * The Los Angeles Lakers claimed Fred Hetzel on waivers from the Portland Trail Blazers.

September 10, 1970

 * The San Diego Rockets traded Art Williams to the Boston Celtics for a 1971 5th round draft pick (Greg Nelson was later selected).

September 15, 1970

 * The Chicago Bulls signed A.W. Holt as a free agent.

September 17, 1970

 * The Milwaukee Bucks traded Zaid Abdul-Aziz and cash to the Seattle SuperSonics for Lucius Allen and Bob Boozer.

September 23, 1970

 * The San Francisco Warriors signed Nick Jones as a free agent.

September 28, 1970

 * The Seattle SuperSonics signed Tom Black as a free agent.

September 29, 1970

 * The Cleveland Cavaliers signed Gary Suiter as a free agent.

October 2, 1970

 * The Boston Celtics sold Jim Barnes to the Baltimore Bullets.

October 5, 1970

 * The Cincinnati Royals signed Moe Barr as a free agent.
 * The Milwaukee Bucks signed Bobby Washington as a free agent.
 * The Milwaukee Bucks signed Jeff Webb as a free agent.

October 7, 1970

 * The Portland Trail Blazers sold Pat Riley to the Los Angeles Lakers.

October 13, 1970

 * The Chicago Bulls signed Jim King as a free agent.

October 14, 1970

 * The Cincinnati Royals signed Bob Arnzen as a free agent.

October 15, 1970

 * The Cleveland Cavaliers signed Cliff Anderson as a free agent.

October 16, 1970

 * The Philadelphia 76ers traded Darrall Imhoff and a future draft pick to the Cincinnati Royals for Connie Dierking and Fred Foster.
 * The Philadelphia 76ers traded Matt Guokas to the Chicago Bulls for a 1971 2nd round draft pick (Marvin Stewart was later selected).

October 20, 1970

 * The Chicago Bulls traded Shaler Halimon to the Portland Trail Blazers for a 1971 2nd round draft pick (Willie Sojourner was later selected).

October 22, 1970

 * The Portland Trail Blazers traded Dorie Murrey to the Baltimore Bullets for a 1971 2nd round draft pick (Rick Fisher was later selected).

October 26, 1970

 * The Portland Trail Blazers signed Bill Stricker as a free agent.

October 28, 1970

 * The Atlanta Hawks claimed Len Chappell on waivers from the Cleveland Cavaliers.

November 11, 1970

 * The Los Angeles Lakers traded John Tresvant to the Baltimore Bullets for a 1972 2nd round draft pick (Paul Stovall was later selected).

November 12, 1970

 * The Cleveland Cavaliers signed Larry Mikan as a free agent.

November 16, 1970

 * The Portland Trail Blazers waived Bill Stricker.

November 26, 1970

 * The Buffalo Braves traded Freddie Crawford to the Philadelphia 76ers for a future draft pick.

December 9, 1970

 * The Cleveland Cavaliers traded Johnny Egan to the San Diego Rockets for a 1971 3rd round draft pick (Jackie Ridgle was later selected).

December 12, 1970

 * The Cleveland Cavaliers claimed Bobby Washington on waivers from the Milwaukee Bucks.

December 17, 1970

 * The Philadelphia 76ers signed Cliff Anderson as a free agent.

December 30, 1970

 * The Seattle SuperSonics signed Spencer Haywood as a free agent. The NBA sued Seattle because Haywood violated rules stating a player could not join the league until he was four years out of high school; the Supreme Court ruled in favor of Seattle on March 8, 1971.

January 17, 1971

 * The San Francisco Warriors signed Bill Turner as a free agent.

January 20, 1971

 * The Pittsburgh Condors traded Howard Porter to the Chicago Bulls for Paul Ruffner and cash.

January 26, 1971

 * The Chicago Bulls waived A.W. Holt.

January 29, 1971

 * The Cincinnati Royals claimed Willie Williams on waivers from the Boston Celtics.

February 1, 1971

 * The Milwaukee Bucks traded Gary Freeman and a 1971 2nd round draft pick (Willie Long was later selected) to the Cleveland Cavaliers for McCoy McLemore.

February 10, 1971

 * The Cincinnati Royals claimed Tom Black on waivers from the Seattle SuperSonics.

March 23, 1971

 * The Portland Trail Blazers traded Jim Barnett to the San Francisco Warriors for a 1971 2nd round draft pick (Charlie Yelverton was later selected), a 1971 3rd round draft pick (William Smith was later selected) and a 1972 2nd round draft pick (Dave Twardzik was later selected).

March 29, 1971

 * The Cincinnati Royals traded Flynn Robinson to the Los Angeles Lakers for a 1971 2nd round draft pick (Joe Bergman was later selected).

April 2, 1971
The Detroit Pistons traded Otto Moore to the Phoenix Suns for a 1972 1st round draft pick (Bob Nash was later selected).

April 6, 1971
The Portland Trail Blazers waived Claude English.

April 8, 1971

 * Alex Hannum resigns as head coach for the San Diego Rockets.

April 15, 1971

 * The Chicago Bulls waived George Johnson.

May 7, 1971

 * The New York Knicks traded Cazzie Russell to the San Francisco Warriors for Jerry Lucas.

May 14, 1971

 * The Houston Rockets hired Tex Winter as head coach.
 * The Cincinnati Royals traded Charlie Paulk to the Chicago Bulls for Matt Guokas and a future draft pick.

June 3, 1971

 * The Los Angeles Lakers fired Joe Mullaney as head coach.

June 9, 1971

 * The Chicago Bulls traded Dick Gibbs to the San Diego Rockets for a 1973 2nd round draft pick (Kevin Stacom was later selected).