Swami Vivekananda (lang-bn?????? ??????????, Shami Bibek?nondo) (January 12, 1863-July 4, 1902), born Narendranath Dutta was the chief disciple of the 19th century mystic Sri Ramakrishna Paramahamsa (Ramakrishna) and the founder of Ramakrishna Mission. He is considered a key figure in the introduction of Hindu philosophies of Vedanta and Yoga in Europe and America and is also credited with raising interfaith awareness, bringing Hinduism to the status of a world religion during the end of the 19th century. Vivekananda is considered to be a major force in the revival (Hindu reform movements) of Hinduism in modern India. He is best known for his inspiring speech beginning with "sisters and brothers of America", through which he introduced Hinduism at the Parliament of the Worlds Religions at Chicago in 1893.

Swami Vivekananda was born in an aristocratic Bengali (Bengali people) family of Calcutta in 1863. His parents influenced the Swamis thinking–the father by his rational mind and the mother by her religious temperament. From his childhood, he showed inclination towards spirituality and God realization. While searching for a man who could directly demonstrate the reality of God, he came to Ramakrishna and became his disciple (Apprenticeship). As a guru, Ramakrishna taught him Advaita Vedanta and that all religions are true, and service to man was the most effective worship of God. After the death of his Guru, Vivekananda became a wandering monk, touring the Indian subcontinent and getting a first-hand account of Indias condition. He later sailed to Chicago and represented India as a delegate in the 1893 Parliament of World Religions. An eloquent speaker, Vivekananda was invited to several forums in United States and spoke at universities and clubs. He conducted several public and private lectures, disseminating Vedanta and Yoga in America, England and a few other countries in Europe. He also established Vedanta societies (Vedanta Society) in America and England. He later sailed back to India and in 1897 founded the Ramakrishna Math and Ramakrishna Mission, a philanthropic and spiritual organization.