Simcoe East was a federal electoral district in the province of Ontario, Canada, that was represented in the House of Commons of Canada from 1882 to 1968.

The "East Riding of the county of Simcoe" initially consisted of the townships of Tay, Medonte, Oro, Orillia, Matchedash, Muskoka, Wood, Medora, Monck and Tiny, the villages of Gravenhurst and Midland, and the towns of Orillia and Penetanguishene.

In 1914, it was redefined to include the villages of Coldwater and Victoria Harbour.

The electoral district was abolished in 1966 when it was redistributed between Grey—Simcoe, Parry Sound-Muskoka and Simcoe North ridings.

This riding elected the following members of the House of Commons of Canada: