The Cape Melville Lighthouse is a historic lighthouse located in the island of Balabac, the southernmost point of the province of Palawan in the Philippines. It is also the southwest corner of the archipelago. The first-order light was constructed by the Spaniards to light Balabac Strait, the treacherous body of water that separates the Philippines from the neighboring country of Malaysia. Lighthouses in the Philippines are maintained by the Philippine Coast Guard.