Swami Satchidananda (1914–2002) was an Indian religious figure who gained fame and followers in the West, especially in the United States.

Satchidananda was born in the Tamil Nadu region of southern India in 1914. At the age of twenty-eight, after the death of his wife, he began his spiritual quest which eventually lead him to becoming an ordained sannyasin in 1949 on the banks of the river Ganges in Rishikesh, India. He was ordained by his guru, Sri Swami Sivananda.

After serving his guru for many years, in 1966 he visited New York City at the request of a U.S. disciple, the artist Peter Max. Soon after his initial visit, Swamiji, as he was known, formally moved to the United States and became a citizen. From his new home he spread his teachings of yoga and enlightenment.

Satchidananda first came to public attention as the opening speaker at the Woodstock music and arts festival in 1969. Over the years he wrote numerous books and gave hundreds of lectures. He also ordained a number of western disciples into the holy order of sanyasa. He was the founder of the Integral Yoga Insitute, and in 1986 opened the LOTUS, the Light of Truth Universal Shrine at Yogaville in Buckingham, Virginia .

On August 19 2002, Satchidananda died from a ruptured thoracic aneurysm in his native Tamil Nadu, India.