1980–81 NHL transactions
The following is a list of all team-to-team transactions that have occurred in the National Hockey League during the 1980–81 NHL season. It lists what team each player has been traded to, signed by, or claimed by, and for which player(s) or draft pick(s), if applicable. Trades between teams

May

June 

 Toronto's third-round pick went to Washington as the result of a trade on June 11, 1980 that sent Tim Coulis, Robert Picard and a second-round pick in the 1980 Entry Draft (26th overall) to Toronto in exchange for Mike Palmateer and this pick. July

August

September 

  Montreal exercised the option and swap the 58th pick for the 43rd overall pick in 1983. Montreal's third-round pick went to Winnipeg with $50,000 cash as compensation to allow Montreal to hire Serge Savard as the new general manager on April 28, 1983. October

November 

 Philadelphia's second-round pick went to Toronto as the result of a trade on January 20, 1982 that sent Darryl Sittler to Philadelphia in exchange for Rich Costello, future considerations (Ken Strong) and this pick. December

January

February 

 Trade completed on June 9, 1982, at the 1982 NHL Entry Draft. Trade completed on May 28, 1981. March 
 Trading Deadline: March 10, 1981 

 Trade completed on May 12, 1981. Montreal exercised the option and swap the 74th pick for the 65th overall pick in 1984. Additional sources
 hockeydb.com - search for player and select "show trades"

References

National Hockey League transactions
1980–81 NHL season