Alor is the largest island in the Alor Archipelago located at the eastern-most end of the Lesser Sunda Islands that runs through southern Indonesia, which from the west include such islands as Bali, Lombok, Sumbawa, Komodo, and Flores.
To the east of the island across the Ombai Strait lie the islands of Wetar and Atauro, the latter belonging to East Timor. To the south, across the Strait of Alor, lies the western part of Timor. To the north lies the Banda Sea. To the west lies Pantar and the other islands of the Alor archipelago, and further yet the rest of the Sunda Islands.