The 2020 Canadian Open were outdoor hard courttennis tournaments that were scheduled to be played from August 8–16, 2020, as part of the 2020 US Open Series. The men's event was scheduled to be played at Aviva Centre in Toronto, and the women's tournament at IGA Stadium in Montreal. It was to be the 140th edition of the men's tournament — a Masters 1000 tournament on 2020 ATP Tour, and the 129th edition of the women's tournament — a Premier 5 event on the 2020 WTA Tour. Due to the COVID-19 pandemic, local restrictions, and the suspension of all play on the ATP and WTA tours, the women's tournament in Montreal was cancelled by Tennis Canada in April 11. At the time, the men's tournament was still tentatively set to be played in Toronto, but was eventually cancelled on June 17. As per annual rotation, Toronto and Montreal will host the men's and women's tournaments in 2021 respectively.
The men's and women's tournaments alternate between Toronto and Montreal annually. On April 11, pursuant to a request by the province of Quebec for all cultural and sporting events to be cancelled through August, Tennis Canada announced that the women's half of the Canadian Open, as part of the 2020 WTA Tour, would be cancelled. As a make-up, the 2021 Canadian Open's women's tournament will be held in Montreal instead. The men's half of the event was still tentatively scheduled, but was still at risk of cancellation or postponement if the ATP and WTA extended their suspension of play into August, or if Toronto or the province of Ontario made a similar order that also applies to the period. Toronto had already cancelled all city-led major events, festivals, conferences, permits and cultural programs until June 30. Although subject to provincial restrictions on public gatherings, Mayor John Tory stated that these did not necessarily bar the hosting of sporting events. On June 17, 2020, Tennis Canada officially announced that the men's tournament had also been cancelled, citing logistical and safety issues that would be present for players and staff even if the event were to be held behind closed doors, including a federal health order requiring 14 days self-isolation upon arrival for anyone travelling to Canada.
