The tournament was first known as La Canadienne, as the event was held in Quebec. In 1974, it was sponsored by
Imperial Tobacco Canada, becoming the Peter Jackson Classic until 1984, after which it became the du Maurier Classic; both Peter Jackson and
du Maurier are cigarettes within the Imperial Tobacco Canada umbrella. From 1988, the tournament was renamed the du Maurier Ltd. Classic. The rebranding was due to new
tobacco advertising restrictions which came into force that year, which only allowed tobacco companies to sponsor cultural and sporting events under their corporate names, and not their product brands. As a workaround, the sponsorship was officially with du Maurier Ltd.—a
special-purpose entity that used du Maurier's
trade dress—and not the du Maurier brand itself. In 2000, the tournament was threatened by new regulations prohibiting any tobacco advertising at sports and cultural events, requiring du Maurier to end its sponsorship. Organizers stated that they were having difficulties finding a sponsor, and could not assure that the event would be held again in 2001. Due to this uncertainty, the LPGA Tour stripped the du Maurier of its major status in favour of the
Women's British Open. In November 2000, it was announced that the
Bank of Montréal would become the new sponsor under a five-year deal, renaming it the Bank of Montreal Canadian Women's Open. The bank declined to renew the sponsorship; in 2006, the
Canadian National Railway became sponsor, renaming it the CN Canadian Women's Open. In November 2013, the
Canadian Pacific Railway took over title sponsorship of the Canadian Women's Open. Canadian Pacific also increased the purse to US$2.25 million. Canadian Pacific merged with
Kansas City Southern Railway in 2023 as
Canadian Pacific Kansas City (CPKC); CPKC inherited the sponsorship, and announced an agreement to renew it through at least 2026. The purse further increased to US$2.5 million. •
1973:
La Canadienne •
1974–
1983:
Peter Jackson Classic •
1984–
1987:
du Maurier Classic •
1988–
2000:
du Maurier Ltd Classic •
2001–
2002: '''Bank of Montreal Canadian Women's Open''' •
2003–
2005: '''BMO Financial Group Canadian Women's Open''' •
2006–
2013: '''CN Canadian Women's Open''' •
2014–
2017: '''Canadian Pacific Women's Open''' •
2018–
2022: '''CP Women's Open''' •
2023–present: '''CPKC Women's Open''' ==Winners==