The 1913–14 NHA season was the fifth season of the National Hockey Association (NHA). At the end of the regular season, a tie for first place necessitated a playoff to determine the championship. The Toronto Hockey Club defeated the Montreal Canadiens 6–2 in a two-game, total-goals playoff. The Torontos then played the Victoria Aristocrats of the Pacific Coast Hockey Association (PCHA) in the first Stanley Cup 'World's Series' between the leagues.

The National Hockey Association (NHA), initially the National Hockey Association of Canada Limited, was a professional ice hockey organization with teams in Ontario and Quebec, Canada. It is the direct predecessor of today's National Hockey League (NHL), and much of the business processes of the NHL today are based on the NHA. Founded in 1909 by Ambrose O'Brien, the NHA introduced 'six-man hockey' by removing the 'rover' position in 1911. During its lifetime, the league coped with competition for players with the rival Pacific Coast Hockey Association (PCHA), the enlistment of players for World War I and disagreements between owners. The disagreements between owners came to a head in 1917, when the NHA suspended operations in order to get rid of an unwanted owner, Eddie Livingstone.