The 1928–29 NHL season was the 12th season of the National Hockey League. Ten teams played 44 games each. This was the first Stanley Cup Finals that saw two United States-based teams compete for the cup. The Boston Bruins defeated the New York Rangers two games to none in the best-of-three final.

Bruins

Black Hawks

Cougars

Canadiens

Maroons

Americans

Rangers

Senators

Pirates

Maple Leafs

Canadian Division American Division

Ottawa continued in financial trouble and sold Punch Broadbent to the New York Americans. They continued to erode, and at one point, rumour had it that they would be sold to a Chicago group. Frank Ahearn, the Senators owner, denied this, but admitted that the team was for sale to the highest bidder.

The New York Americans, last place finishers in 1927–28, surprised everyone by occupying first place for much of the season in the Canadian Division. They were held up by the great play of defenceman Lionel Conacher and goaltender Roy Worters. However, the Montreal Canadiens dislodged the Americans and finished first. Boston, led by rookie Tiny Thompson in goal, led the American Division.

Bruins' player George Owen was the first NHL player to regularly wear headgear for protective purposes. Prior to this, the only time protective headgear was worn was to temporarily protect injuries. Fifty-one years later the NHL mandated the use of helmets. Craig MacTavish was the last NHL player to not wear a helmet, retiring in 1997.

The Chicago Black Hawks set records for goal scoring futility, scoring on average less than one goal per game (33), while giving up a league worst 85 goals against. In one stretch from February 7 through February 28, the Hawks were shut out in eight consecutive games.^[2] Forward Vic Ripley was the Hawks' leading goal scorer with only 11 goals and 2 assists for 13 points for the entire 44-game season.^[3]

The season produced a record 120 shutouts in the 220 games played. George Hainsworth, Canadiens goaltender, set an NHL record that remains unmatched through the 2015–16 season of 22 shutouts and a 0.92 goals against average. Seven other goaltenders hit double digits in shutouts.^[2]

The playoff format was revised to match the divisional first-place teams in a best-of-five semifinal. The divisional second-place teams and third-place teams played off in a two-game total-goals series to determine the participants for the other best-of-three semifinal. The semifinal winners then played off in a best-of-three series for the Cup.

Frank Boucher won his second consecutive Lady Byng award and George Hainsworth won his third consecutive Vezina Trophy.

The following is a list of players of note who played their first NHL game in 1928–29 (listed with their first team, asterisk(*) marks debut in playoffs):

• Tiny Thompson, Boston Bruins
• Cooney Weiland, Boston Bruins
• George Owen, Boston Bruins
• Johnny Gottselig, Chicago Black Hawks
• Mush March, Chicago Black Hawks
• Herbie Lewis, Detroit Cougars
• Georges Mantha, Montreal Canadiens
• Armand Mondou, Montreal Canadiens
• Baldy Northcott, Montreal Maroons
• Dave Trottier, Montreal Maroons
• Earl Robinson, Montreal Maroons
• Red Horner, Toronto Maple Leafs
• Andy Blair, Toronto Maple Leafs

The following is a list of players of note that played their last game in the NHL in 1928–29 (listed with their last team):

• Cy Denneny, Boston Bruins
• Duke Keats, Chicago Black Hawks
• Dick Irvin, Chicago Black Hawks
• Red Green, Detroit Cougars
• Herb Gardiner, Montreal Canadiens
• Punch Broadbent, New York Americans

• 1928–29 NHL transactions
• List of Stanley Cup champions
• 1928 in sports
• 1929 in sports