Bishop Robert Caldwell (7 May 1814 – 28 August 1891) was a missionary and linguist, who academically established the Dravidian family of languages. He served as Assistant Bishop of Tirunelveli from 1877. He was described in The Hindu as a 'pioneering champion of the downtrodden' and an 'avant-garde social reformer'. The Government of Tamil Nadu has created a memorial in his honour. On the Madras Marina, a statue of Caldwell was erected as a gift of the Church of South India in 1967.