Josiah Relph (3 December 1712 – 26 June 1743) was a Cumberland poet (his first name is given as Joseph in earlier editions of the Dictionary of National Biography). His poetical works were first published in 1747 under the title of A Miscellany of Poems. They were edited by Thomas Sanderson, who supplied a biography of the author and a pastoral elegy on his death. A second edition appeared at Carlisle in 1798, with the biography and engravings by Thomas Bewick.
Relph's best verses are in the dialect of his native county; they show talent and appreciation of natural beauties.