The Andaman and Nicobar Islands is a union territory of India comprising 836 islands , of which only 31 are inhabited. The islands are grouped into two main clusters: the northern Andaman Islands and the southern Nicobar Islands , separated by a 150 km (93 mi) wide channel. Book your Hotel in the Andaman Islands . No reservation costs. Great rates. Choose from a wide range of properties which Booking.com offers. Search now! Andaman and Nicobar Islands , union territory of India, consisting of two groups of islands at the southeastern edge of the Bay of Bengal. They form an arc stretching southward for some 620 miles (1,000 km) between Myanmar (Burma) and the island of Sumatra, Indonesia. Choose from our wide selection of things to do. Book in advance and skip the lines. Plan your trip without worry. We offer free cancellation and 24/7 customer service.