East Nusa Tenggara is the southernmost province of Indonesia. It comprises the eastern portion of the Lesser Sunda Islands, facing the Indian Ocean in the south and the Flores Sea in the north. It consists of more than 500 islands, with the largest ones being Sumba, Flores, and the western part of Timor; the latter shares a land border with the separate nation of East Timor. The province is subdivided into twenty-one regencies and the regency-level city of Kupang, which is the capital and largest city.
A Christian-majority region, East Nusa Tenggara is the only Indonesian province where Roman Catholicism is the predominant religion. The province has a total area of 47,931.54 km², and the population at the 2010 Census was 4,683,827, which rose to 5,112,760 at the 2015 Census and 5,325,566 at the 2020 Census. Economically, East Nusa Tenggara still remains one of the least developed provinces in Indonesia. It currently focuses on expanding the tourism sector, with the most well-known attractions including Labuan Bajo, Komodo National Park, and Mount Kelimutu.