This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "1977–78 NHL transactions" – news · newspapers · books · scholar · JSTOR (July 2022) (Learn how and when to remove this message)

The following is a list of all team-to-team transactions that have occurred in the National Hockey League during the 1977–78 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.

1. Trade completed on November 3, 1977.

1. Trade completed on June 15, 1978, at the 1978 Amateur Draft.

1. Washington's first-round pick went to Minnesota as the result of a trade on October 18, 1978, that sent Dennis Maruk to Washington in exchange for this pick.

1. Trade completed on May 27, 1978.
2. Trade completed on December 15, 1977.

1. Draft pick not exercised by Cleveland due to Barons-North Stars merger on June 14, one day prior to the 1978 NHL Amateur Draft.
2. Draft pick forfeited by the Islanders due to Barons-North Stars merger on June 14, one day prior to the 1978 NHL Amateur Draft.

1. Trade completed on May 4, 1978.

• hockeydb.com - search for player and select "show trades"
• "NHL trades for 1977-1978". NHL Trade Tracker. Retrieved July 22, 2021.