Cormier, a native of Cap-Pele, New Brunswick, is the first native of New Brunswick to captain a Canadian junior team.
He had a goal, 3 points and a plus-2 rating in six games at last year's WJC, as Canada won its fifth straight gold medal.
Cormier was taken by the Devils in the second round of the 2008 Entry Draft. This season, his third with the Rimouski Oceanic of the QMJHL, the 6-foot-2, 205-pound center has 11 goals, 26 points and a team-high 57 penalty minutes.
Canada also named five assistant captains -- forwards Stefan Della Rovere and Jordan Eberle, and defensemen Ryan Ellis, Alex Pietrangelo and Colten Teubert. All five joined Cormier on last year's WJC team.
Canada will start its quest for an unprecedented sixth straight WJC gold medal Dec. 26 against Latvia (4 p.m. ET, NHLN-U.S., TSN, RDS).