The Regina Cyclone, Canada's deadliest tornado event, kills 28 people in Regina, Saskatchewan.

On Sunday, June 30, 1912, a violent and deadly tornado devastated the city of Regina, Saskatchewan, Canada. The tornado, also known as the Regina Cyclone or the Regina tornado of 1912, remains the deadliest tornado in Canadian history with a total of 28 fatalities and about 300 people injured. At about 4:50 p.m., green funnel clouds formed and touched down south of the city, tearing through the residential area between Wascana Lake and Victoria Avenue, and continuing through the downtown business district, rail yards, warehouse district, and northern residential area.

Regina is the capital city of the Canadian province of Saskatchewan. The city is the second-largest in the province, and is a commercial centre for southern Saskatchewan. As of the 2021 census, Regina had a city population of 226,404, and a metropolitan area population of 249,217. It is governed by Regina City Council. The city is surrounded by the Rural Municipality of Sherwood No. 159.