Western Reef (Vietnamese: Đá Đền Cây Cỏ; Mandarin Chinese: 福祿寺礁 / 福禄寺礁; pinyin: Fúlùsì Jiāo) is a reef in the South China Sea, located 66.7 kilometres (41.4 mi) west of Gaven Reefs in the Spratly Islands.