All the islands are not the same. Islands are usually distinguished by the locations where they are located, according to whether they are inhabited or uninhabited, whether they artificial or natural ... This is a list of islands that are champions in their categories.
# The World's Tallest Island, Papua New Guinea, IndonesiaThe world's tallest island is New Guinea, in the western Pacific, which rises 16.024 ft (4.884 m) from sea level to the top of Puncak Jaya Mountain. This island is the world's second largest island, after Greenland, covering a land area of 786.000 sq km (about 300.000 sq mi). New Guinea lies geographically to the east of the Malay Archipelago, with which it is sometimes included as part of a greater Indo-Australian Archipelago.
# The World's Largest River Island, BrazilThe world's largest river island is Bananal Island. Bananal Island is a large island formed from the bisection of the Araguaia River, in southwestern Tocantins, Brazil. The island is formed by a fork in a very flat section of the Araguaia River. Bananal Island is 350 km (217 mi) long and 55 km (34 mi) wide. Its total area is 19,162.25 sq km (7,400 sq mi), twice the size of Lebanon or Jamaica.
# The Largest Island on Another Island, IndonesiaSamosir Island is a large volcanic island in Lake Toba, located in the north of the island of Sumatra in Indonesia. At 630 sq km (243 sq mi), Samosir is the largest island within an island, and the fifth largest lake island in the world. It also contains two smaller lakes, Lake Sidihoni and Lake Aek Natonang. This island is inhabited and it is a popular tourist destination due to its exotic history and the vistas it offers.
# The World's Largest Triple Island, CanadaThere are several places where islands on islands in turn have lakes with islands – triple islands. The largest island on an island on an island is a 4 acre (1.6 ha) island in a lake on an island in a lake in south-central Victoria Island, Nunavut, Canada, at 69.7928° North, 108.2411° West.
# The Most Populous Island, IndonesiaJava is an island of Indonesia. With a population of 135 million, Java is the world's most populous island, and one of the most densely-populated places on the globe. Java is the home of 60 percent of the Indonesian population. The Indonesian capital city, Jakarta, is located on western Java.
# The Largest Uninhabited Island, CanadaDevon Island is located in the Territory of Nunavut in Canada. It is the largest uninhabited island on Earth, with a surface area of approximately 55,247 sq km (21,331 sq mi). Because of its relatively high elevation and its extreme northern latitude, it supports only a meagre population of musk oxen and small birds and mammals.
# The Largest Lake Island, CanadaManitoulin Island, the largest lake island in the world, separates Lake Huron from the Georgian Bay and forms the North Channel, one of the most highly regarded waterways in the world. This island is home to pristine forest, dramatic landscapes of the Cup and Saucer nature trail, and crystal clear lakes. It is an area with a rich history and culture, with many First Nations reserves. The island has an area of 2,766 sq km (1,068 sq mi), making it the 172nd largest island in the world, and Canada's 31st largest island.