Vishal Mangalwadi (b. 1949) is an Indian philosopher, author, and social reformer known for his critical examination of Indian spiritual traditions and his scholarly exploration of Christian faith. He gained prominence through his influential book "The World of Gurus," which offers a critical analysis of the guru system in Indian Hinduism. Mangalwadi holds a doctorate in philosophy and has dedicated his career to examining faith, reason, and social transformation. He founded Life Transformation International and has lectured extensively worldwide on religion, philosophy, and social issues.