The 1902 Canadian Amateur Hockey League (CAHL) season was the fourth season of the league. Teams played an eight game schedule. The Montreal HC were the league champion with a record of six wins and two losses. After the season, Montreal HC challenged the Winnipeg Victorias for the Stanley Cup title and were victorious.
New fines were added for being more than 15 minutes late for a game and forfeiting.
The clubs demanded an increase in gate receipts share from 33% to 40% and a higher number of free tickets from the Montreal Arena owners, but settled for the increase in tickets only.
The Shamrocks team, which had won the Stanley Cup only two seasons prior, was completely new. While Fred Scanlan went to Winnipeg, Harry Trihey, Arthur Farrell, Frank Wall, Frank Tansey, James McKenna and Jack Brannen all retired from competitive ice hockey. The team sank to the bottom of the standings.
Montreal would win the league led by their big line of Archie Hooper, Jack Marshall, Jimmy Gardner and Charlie Liffiton. The players would earn their nickname of the 'Little Men of Iron', winning the Stanley Cup in a challenge with Winnipeg. Hooper would score nine goals against the Shamrocks on January 5, on his way to winning the scoring title.