Swami Hariharananda Aranya (1869–1947) was a yogi, author, and founder of Kapil Math in Madhupur, India, which is the only monastery in the world that actively teaches and practices Samkhya philosophy. His book, Yoga Philosophy of Patanjali with Bhasvati, is considered to be one of the most authentic and authoritative classical Sanskrit commentaries on the Yoga Sutras. Hariharananda is also considered by some as one of the most important thinkers of early twentieth-century Bengal.