Satguru Sivaya Subramuniyaswami (January 5, 1927 – 2001), known as Gurudeva by his followers, was a Hindu leader and author. He was born in Oakland, California. He made a Hindu monastery in Kauai, Hawaii and founded the magazine Hinduism Today. Subramuniyaswami was an author of many books on Hinduism and metaphysics. He was one of the most traditional and well known people of Hinduism during the last two decades of the 20th century. He was one of Saivism's most revered Gurus, the founder and leader of the world's first Hindu church (Saiva Siddhanta Church).
Subramuniyaswami has written several books on Hinduism, Saivism, yoga and meditation. His works are highly regarded by many of today's Hindu leaders. Subramuniyaswami's largest work, Master Course, is a complete essay on all parts of Hinduism (Saivism), including the Hindu approach to meditation and metaphysics. It is in three books and more than 3,000 pages. The work is written in a flowing version of written English that is similar to the spoken language as well as ancient Hindu oral traditions.