The winged bean (Psophocarpus tetragonolobus), also known as the Goa bean, four-angled bean, four-cornered bean, Manila bean, Mauritius bean, is a tropical legume plant native to New Guinea.

It grows abundantly in hot, humid equatorial countries, from the Philippines and Indonesia to India, Burma, Malaysia , Thailand and Sri Lanka. It is widely known, yet grown on a small scale in Southeast Asia and Papua New Guinea. Winged bean is well-recognized by farmers and consumers in the Asian region for its variety of uses and disease tolerance. Winged bean is nutrient-rich, and all parts of the plant are edible. Leaves can be eaten like spinach, flowers can be used in salads, tubers can be eaten raw or cooked, seeds can be used in similar ways as the soybean. The winged bean is an underutilized species but has the potential to become a major multi-use food crop in the tropics of Asia, Africa and Latin America.