The following is a list of all team-to-team transactions that have occurred in the National Hockey League during the 2011–12 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.
Players who have retired are also listed.
Once an NHL player has played in a certain number of games or a set number of seasons has passed since the signing of his first NHL contract (see here), that player must be offered to all of the other NHL teams before he can be assigned to a minor league affiliate.