Longkou (simplified Chinese: 龙口; traditional Chinese: 龍口; pinyin: Lóngkǒu), formerly Huang County (simplified Chinese: 黄县; traditional Chinese: 黃縣; pinyin: Huáng Xiàn), is a port city in northeastern Shandong province, People's Republic of China, facing the Bohai Sea to the north and the Laizhou Bay to the west. Longkou, a county-level city, is administered by the prefecture-level city of Yantai.