Nicholas Rigby (1800 – 7 September 1886), was an English Catholic priest.
He was born in Walton-le-Dale near Preston, Lancashire. At the age of twelve he went to Ushaw College, where he was for a time professor of elocution. Ordained priest in September, 1826, he was sent to St. Mary's, Wycliffe, for six months, and was then given the united missions of Egton Bridge and Ugthorpe. After seven years the two missions were again separated, and he took up his residence at Ugthorpe. There he built a church (opened in 1855), started a new cemetery, and founded a middle-class college. About 1884 he resigned the mission work to his curate, the Rev. E.J. Hickey. He died at Ugthorpe. His obituary notice, in the Catholic Times of 17 September 1886, gives a sketch of his life.