Lake Danao is the smaller of the two lakes located in the Balinsasayao Twin Lakes Natural Park in the southern part of Negros Oriental in the Philippines; the other being Lake Balinsasayao. The lakes and its surrounding were designated as a protected area by Proclamation No. 414 on 21 November 2000 categorized as a Natural Park covering about 8016ha. The lake itself has about 28ha surface area.