The Bocca Tigris, Bogue, or Humen is a narrow strait in the Pearl River Delta, near Humen (town), Guangdong Province, China, where the Pearl River discharges into the South China Sea. The strait is formed by the islands of Chuanbi or Chuenpee (穿鼻) and Aniangxie or Anunghoy (阿娘鞋, also known as 威远; pinyin: Weiyuan) on the eastern side and Tycocktow (大角头; pinyin: Dajiaotou) on the western side. Since 1997, the strait has been traversed by the Humen Pearl River Bridge.
Because of its strategic location as the naval gateway to the city of Guangzhou, the strait was traditionally fortified. It was the site of several major battles in the First Opium War including the Battle of the Bogue in 1841.