Southwest Cay (11°26′N114°20′E) (Chinese: 南子岛; pinyin: Nanzi Dao; Tagalog: Pugad; Vietnamese: Đảo Song Tử Tây) is an islet on the northwestern edge of the Spratly Islands in the South China Sea. It is part of the atoll North Danger Reef, and just 1.75 miles southwest of Northeast Cay. With an area of 12 hectares, it is the sixth largest of the Spratly islands, and the second largest of the Vietnamese-occupied Spratly Islands. Southwest Cay has the archipelago's highest point, at 4 meters above sea level.