Dayananda Saraswati (1824 - 1883) was an Indian philosopher, social leader, and founder of the Arya Samaj, a reform movement of Hinduism. He was an advocate of returning to the Vedas, the earliest scriptures of India, as the sole source of religious authority.

Dayananda was born into a wealthy Brahmin family in Tankara, Gujarat. As a young man, he left home to searching for religious truth. He spent the next 15 years traveling throughout India, studying the Vedas and engaging in religious debates.

In 1860, Dayananda founded the Arya Samaj in Bombay (now Mumbai). The Arya Samaj's mission was to reform Hinduism and to promote social progress. Dayananda's teachings are based on the principal that the Vedas are the authoritative source of religious and moral truth. He was a proponent of abandoning idolatry and superstition, the equality of all people regardless of caste or gender in the eyes of God, education as essential for both men and women, and the eradication of “untouchability” (caste) & child marriage.

Dayananda traveled extensively throughout India, giving lectures and spreading his teachings. He also wrote several books, including the Satyarth Prakash, which is a comprehensive exposition of his religious and social views. He also practiced Hatha Yoga.

Dayananda's teachings had a profound impact on Indian society. The Arya Samaj played a major role in the social and religious reform movements of the 19th century. Dayananda's ideas also inspired many of the leaders of the Indian independence movement.

Many unsuccessful assassination attempts were made on Dayananda’s life, and he died under circumstances suggesting that he may have been poisoned.

The street named in Dayananda’s honor is in front of Arya Samaj Gurukul, a gurukul is an education center where students study with their guru (teacher).