Francis Egerton, 1st Earl of Ellesmere,, known as Lord Francis Leveson-Gower until 1833, was a British politician, writer, traveller and patron of the arts. Ellesmere Island, a major island in Nunavut, the Canadian Arctic, was named after him.

Ellesmere Island is Canada's northernmost and third largest island, and the tenth largest in the world. It comprises an area of 196,236 km2 (75,767 sq mi), slightly smaller than Great Britain, and the total length of the island is 830 km (520 mi).