South Button Island National Park is a national park located in the Andaman and Nicobar Islands off the coast of India. The total area of this protected island is about 5 km2 (2 sq mi), which makes it the smallest national park in India.[1] Along with the neighbouring islands of North Button and Middle Button, both also national parks, it forms part of the Rani Jhansi Marine National Park off the coast of South Andaman Island.[2]