Nkasa Rupara National Park, also Nkasa Lupala National Park, formerly Mamili National Park, is a national park in Namibia. It is centered on the Nkasa and Rupara islands on the Kwando/Linyanti River in the south-western corner of East Caprivi. Botswana lies to the west, south and east, and Sangwali village to the north. It is Namibia's largest formally protected wetland area. It is one of Namibia’s protected areas that benefits local communities surrounding parks. The unfenced park forms a trans-boundary link for wildlife migration between Angola, Botswana, Namibia and Zambia.