Humen is a location in Guangdong Province, China, situated near the town of Humen. It is primarily identified as a narrow strait in the Pearl River Delta known as the Bocca Tigris or the Bogue. This waterway serves as the point where the Pearl River discharges into the South China Sea, separating Shiziyang to the north from Lingdingyang to the south.
The geography of the strait is defined by the islands of Chuenpi and Anunghoy on its eastern side and Taikoktow on its western side. It contains the Port of Humen at Humen Town and has been traversed by the Humen Pearl River Bridge since 1997. Historically, Bocca Tigris served as the entry point to Canton, which was China's only trading city.