The 1918 Toronto anti-Greek riot was a three-day race riot in Toronto, Ontario, Canada, targeting Greek immigrants during August 2–4, 1918. (Some sources indicate the date range August 1–5, to include the event that triggered the violence and the date of the final restoration of the peace.) It was the largest riot in the city's history and one of the largest anti-Greek riots in the world. In the newspapers of the time the events were referred to as the Toronto troubles. The riots were the result of prejudice against new immigrants and the false beliefs that Greeks were not fighting in World War I, and that they were pro-German.