Iliniza Sur is a mountain in the Andes of Ecuador. It has a height of 5,263 metres.

Ibarra is a city in northern Ecuador and the capital of the Imbabura Province. It lies at the foot of the Imbabura Volcano and on the left bank of the Tahuando river. It is about 70 kilometres northeast of Ecuador's capital Quito.

Inch Island is an island in Lough Swilly, County Donegal, Ireland.

Inchydoney is a small island off West Cork, Ireland, connected to the mainland by two causeways. The nearest town is Clonakilty. It has a Blue Flag beach. It is a popular tourist destination. There are two beaches, one either side of the Virgin Mary.

Ingapirca is a town in Ecuador’s Cañar province. It’s known for the Ingapirca Ruins, an archaeological complex north of town with ancient Incan masonry.

Istria formerly Histria (Latin), Ίστρια (Ancient Greek), is the largest peninsula in the Adriatic Sea.

Iquique is a coastal city in northern Chile, to the west of the Atacama Desert. A prosperous saltpeter mining town in the 19th century, today it's a popular holiday destination with a tax-free port area, Pacific beaches and a seafront casino.

Ireland is an island in the North Atlantic. It is separated from Great Britain to its east by the North Channel, the Irish Sea, and St George's Channel. Ireland is the second-largest island of the British Isles, the third-largest in Europe.

Ishigaki Island is the commercial hub of the Yaeyama Islands, in Japan’s southwestern Okinawa Prefecture. It's known for beaches and sites for snorkeling, diving, and surfing.

Coiba Island is part of Panama, off the country's Pacific Coast, in the Gulf of Chiriquí. Once a penal colony, it's now part of Coiba National Park, which is known for its diverse marine life and jungle animals including white-faced monkeys.