1984–85 NHL transactions
The following is a list of all team-to-team transactions that have occurred in the National Hockey League during the 1984–85 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

August

 Toronto's fourth-round pick was re-acquired as the result of a trade on September 18, 1985 that sent Dominic Campedelli to Montreal in exchange for Montreal's second-round pick in 1986 Entry Draft and this pick. September 

  Trade completed on June 21, 1986. October 

 Boston's fourth-round pick went to Quebec as the result of a trade October 25, 1984 that sent Louis Sleigher to Boston in exchange for Luc Dufour and this pick. November 

  The Islanders had the option of the first-round pick in 1985 or 1986 Entry Draft. They selected in the 1985 draft. December

January

February

March 
 Trading Deadline: March 12, 1985 

  Vancouver's third-round pick was re-acquired as the result of a trade on June 6, 1986 that sent Jean-Jacques Daigneault, Vancouver's second-round pick in 1986 Entry Draft and fifth-round pick in 1987 Entry Draft to Philadelphia in exchange for Dave Richter, Rich Sutter and this pick. References

Additional sources
 hockeydb.com - search for player and select "show trades"
 

National Hockey League transactions
1984–85 NHL season