Prince Edward Island (PEI or P.E.I.; French: Île-du-Prince-Édouard, pronounced: [il dy pʁɛ̃s edwaːʁ], Mi'kmaq: Epekwitk, Scottish Gaelic: Eilean a' Phrionnsa) is a Canadian province consisting of an island of the same name, as well as other islands. The maritime province is the smallest in the nation in both land area and population. The island has a few other names: "Garden of the Gulf" referring to the pastoral scenery and lush agricultural lands throughout the province; and "Birthplace of Confederation", referring to the Charlottetown Conference in 1864, although PEI did not join the confederation until 1873, when it became the seventh Canadian province.

According to the 2009 estimates, Prince Edward Island has 141,000 residents. It is located in a rectangle defined roughly by 46°–47°N, and 62°–64°30′W and at 5,683.91 km² (2,194.57 sq mi) in size, it is the 104th-largest island in the world, and Canada's 23rd-largest island.

The island was named for Prince Edward, Duke of Kent and Strathearn (1767–1820), the fourth son of King George III and the father of Queen Victoria.

Edward Island is an island in Lake Superior, located southwest of the Black Bay Peninsula in Thunder Bay District, Northwestern Ontario. It is located about six km from Porphyry Island Provincial Park and approximately twelve km from Sleeping Giant Provincial Park and sixteen km east of Silver Islet, Ontario. The island is about 42 kilometres east of the city of Thunder Bay.

The entire 600 hectare island constitutes the Edward Island Provincial Park or nature reserve.