The 1921–22 PCHA season was the 11th season of the professional men's ice hockey Pacific Coast Hockey Association league. Season play ran from December 5, 1921, until February 24, 1922. The season was enlarged to 24 games per team. The Seattle Metropolitans club would be regular-season PCHA champions, but would lose the play-off with Vancouver Millionaires.
The league introduced the penalty shot rule this season to counter deliberate fouls when a player had a clear goal-scoring opportunity. Three dots, 35 feet from each net were painted on the ice from which players would shoot on the goalkeeper.
Play started two weeks earlier to accommodate the playoffs against the Western Canada Hockey League.
Lester Patrick twice subbed for goaltender Norman Fowler when Fowler was sent off for fighting. His style of getting to his knees to make a save earned him the nickname of the Praying Colonel.
Ernie "Moose" Johnson played the last game in his career on January 18. He scored the final goal in his career on January 13.
Frank Foyston had the best one-game performance of the season, scoring five goals against Vancouver on January 11. Jack Adams though led the league in scoring with 25 goals in 24 games.