The Continental Senior A Hockey League was a Canadian Senior hockey league that started play in the 1971-72 season. When the league was founded, it was classified as a Senior B league, however senior hockey was dwindling in popularity during this era. In the 1974-75 season the Contintental League successfully petitioned the Canadan Amateur Hockey Association to play for the Allan Cup - the trophy associated with Senior A hockey. There were just six teams playing in the Ontario Hockey Senior A category, and that group had nearly gone defunct prior to the 1974-75 season.
With the ability to play for the Allan Cup, the league changed its name to the Continental Senior A Hockey League for the 1975-76 season. It played separately from the OHA Senior A grouping of teams until finally merging with them in the early 1980's.