Mar Podippara Ouseph Placid Malpan also known as Placidachan (3 October 1899 – 27 April 1985) was an Indian Syriac Catholic priest and scholar of the St. Thomas Christian community. He was a scholar in East Syriac language and liturgy. A book published on the tenth anniversary of his death calls him one of the greatest ecclesiastical luminaries of the 20th century in India. He was a member of the Syro Malabar Church and was ordained a priest from the Eastern Catholic religious institute of the Carmelites of Mary Immaculate (C.M.I.). He was also a theologian, liturgist, orator, professor, ecumenist, and author.