Emerald Isle refers to several different geographic locations:
* The Emerald Isle is a poetic name for Ireland, due to its green countryside.
* Emerald Isle, an Arctic island in Canada's Northwest Territories.
* Emerald Isle, a town on the barrier island of Bogue Banks, in North Carolina, USA.
* The "Emerald Isle" is also a nickname for the islands of Lesbos off Greece, Kodiak Island in Alaska, Sri Lanka, Phú Quốc in Vietnam, and Montserrat in the Caribbean.
* The Emerald Island (phantom) is a phantom island reported by some early explorers to lie between Australia and Antarctica.
