Alor (Indonesian: Pulau Alor) is the largest island in the Alor Archipelago located at the eastern Lesser Sunda Islands that runs through southeastern 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.
Alor is one of the 92 officially listed outlying islands of Indonesia.
On 12 November 2004, an earthquake measuring 6.0 on the Richter scale occurred, killing 34 people.