Ancistrocladus tectorius is a species in the monogeneric family Ancistrocladaceae found in China (Hainan), Cambodia, India (Andaman and Nicobar Islands), Indonesia, Laos, Malaysia, Myanmar, Singapore, Thailand, and Vietnam. The Vietnamese name is trung quân; Chinese: 钩枝藤, gou zhi teng.

These are palaeotropical, climbing, twining plants, found in lowland to sub-montane, wet evergreen to seasonal tropical forests in valleys and on slopes from sea level to 1600 m. Good specimens can be found in Cát Tiên National Park, Đồng Nai Province, where leaves are used as roofing material by minority people.