They join a select group of players and builders who have been awarded the Hockey Canada honour, including Jean Beliveau, Wayne Gretzky, Gordie Howe, Cassie Campbell-Pascall and Gord Renwick.
Henderson, 69, is best known for scoring a game-winning goal in Game 8 of the 1972 Summit Series against the Soviet Union.
King, 64, is a longtime coach whose many accolades include guiding Team Canada to its first World Junior gold medal in 1982.
Mark Messier, the 49-year-old Hall of Famer known as "The Moose," is considered one of the greatest leaders the game has ever seen.
They are the second class of recipients to receive the Order of Hockey in Canada for their "extraordinary" impact on the sport.