Riverdale was a provincial riding in Ontario, Canada that existed from 1914 to 1999. It occupied an area east of the Don River from the city limits just north of Danforth Avenue south to Lake Ontario. It was named after the neighbourhood of Riverdale. In 1999 a major reduction in Ontario seats resulted in Riverdale being merged with part of East York into a larger riding called Broadview-Greenwood.

Toronto East, also known as East Toronto, was a provincial riding that was created in Toronto, Ontario when the country of Canada was established in 1867. At the time Toronto was divided into two ridings, East Toronto and West Toronto. In 1886, these ridings were dissolved and a combined riding of the entire city was created which elected three members. In 1894 this riding was split into four parts of which Toronto East was one. It occupied the eastern part of the old city of Toronto. From 1908 to 1914 it elected two members to the legislature.