Padmanabhan Palpu LMS, DPH (Cantab) FRIPH (London) (2 November 1863 – 1950) was a bacteriologist and social revolutionary. Ritty Lukose describes him as the "political father" of the Ezhavas, who are numerically the largest caste in the region now encompassed by the state of Kerala. In 1903, he founded the Sree Narayana Dharma Paripalana (Society for the Propagation of the Religion of Sree Narayana, or SNDP) that had as its first president Narayana Guru.
