The 1927-28 NHL season was the eleventh season of the National Hockey League. Ten teams played 44 games each. The New York Rangers won the Stanley Cup beating the Montreal Maroons becoming the first United States based team since the formation of the NHL to win it and first since the Seattle Metropolitans won in 1917. This season saw the reintroduction of the O'Brien Trophy, which used to go to the NHL league champion. It was originally retired in favour of the Prince of Wales Trophy. The reintroduced O'Brien Trophy went to the winner of the Canadian Division while the Prince of Wales Trophy went to the winner of the American division.