Joseph Peter de Fonseka (1897–1948) was a Sri Lankan essayist and editor. His essays were noted for their trenchant humour and defence of Roman Catholic values, in the style of G. K. Chesterton and Hilaire Belloc. He was a friend and collaborator of the former. Fonseka worked as a teacher of English in St. Joseph's Catholic College, Ceylon (as Sri Lanka was then known), a school he had attended as a youth, when he captained the cricket team. He trained as a lawyer, but did not practice, preferring to teach and write.