Sri Nārāyana Guru (Malayalam: ശ്രീ നാരായണ ഗുരു) (1856–1928), also known as Sree Nārāyana Guru Swami, was a Hindu saint, sadhu^{[Full citation needed]} and social reformer of India. The Guru was born into an Ezhava family, in an era when people from backward communities like the Ezhavas faced much social injustices in the caste-ridden Kerala society. Gurudevan, as he was fondly known to his followers, led Reform movement in Kerala, revolted against casteism and worked on propagating new values of freedom in spirituality and of social equality, thereby transforming the Kerala society and as such he is adored as a prophet.

Nārāyana Guru is revered for his Vedic knowledge^{[citation needed]}, poetic proficiency^{[citation needed]}, openness to the views of others^{[citation needed]}, non-violent philosophy^{[citation needed]} and his unrelenting resolve to set aright social wrongs. Nārāyana Guru was instrumental in setting the spiritual foundations for social reform in today's Kerala and was one of the most successful social reformers who tackled caste in India. He demonstrated a path to social emancipation without invoking the dualism of the oppressed and the oppressor.