Lawrence Trevor Picachy (7 August 1916 – 30 November 1992), was an Indian Jesuit priest, spiritual guide of Mother Teresa, and later Archbishop of Calcutta (1969 to 1992).
After completing the Higher Secondary Cambridge course at St. Joseph's School in Darjeeling, Picachy entered the Society of Jesus, more commonly known as the Jesuits, in 1934.
After a stint as a teacher in St. Xavier's Collegiate School, Calcutta, he spent four years at St. Mary College (Kurseong) for the Theological studies preparing for the priesthood.
Picachy was ordained to the priesthood on 21 November 1947, and served as a professor and rector of St Xavier's (school and college), in Calcutta, from 1950 to 1960, whence he began pastoral work in Basanti.
Pope Paul VI created him Cardinal Priest of Sacro Cuore di Maria in the consistory of 24 May 1976.