Tetrastigma is a genus of flowering plants in the family Vitaceae, commonly known as the grape family. These plants are primarily found in tropical and subtropical regions of Asia, particularly in countries like India, China, and Vietnam. Tetrastigma species are often climbing vines, using other plants for support as they grow. Many Tetrastigma species are important in their ecosystems, serving as hosts for the Rafflesia flower, which is known for producing the largest individual flower in the world. Additionally, some species have medicinal properties and are used in traditional medicine in various cultures.