Aristolochia westlandii is a species of plant in the Aristolochiaceae family. It is found in China and Hong Kong. It is found in valley forests in Guangdong Province at an elevation of 300 to 800 meters. The leaves are long, narrow and pointed (12–20 cm). The flowers are bent tubes from 10 to 15 cm long that grow from the base of a leaf. They are yellow with purple veins and blotches.