William John Beamont (1828–1868) was an English clergyman and author.
Beamont was born at Warrington, Lancashire, 16 January 1828, being the only son of William Beamont, solicitor and author of Annals of the Lords of Warrington, and other works. After attending the Warrington grammar school for five years he was, in 1842, removed to Eton College, where he remained till 1846, bearing off Prince Albert's prize for modern languages, and the Newcastle medal and other prizes. He entered Trinity College, Cambridge, in 1846, took high honours, gained the chancellor's medal, and was awarded a fellowship in 1852. He graduated B.A. in 1850, and M.A. in 1853.
After his election as fellow of Trinity he commenced a tour in Egypt and Palestine, and on being ordained in 1854 he spent some time at Jerusalem, where he engaged earnestly in the education of intending missionaries to Abyssinia, in Sunday school work, and in preaching not only to the English residents but to the Arabs in their own tongue. He afterwards acted as chaplain in the camp hospitals of the British army before Sevastopol during the Crimean War. In 1855 Beamont returned home, and became curate of St. John's, Broad Street, Drury Lane, London, in which parish he worked with great zeal until 1858, when he accepted the vicarage of St. Michael's, Cambridge. He died at Cambridge, 6 Aug. 1868, at the age of forty, his death being hastened by a fever caught in the East. He was buried in Trinity College Chapel. Beamont's life was one of unremitting self-denying usefulness, and in addition to his successful parochial labours and his pioneer efforts for church extension in Barnwell and Chesterton, he was the main instrument of founding the Cambridge School of Art (1858) and the Church Defence Association (1859). He was also the originator of the Church Congress (1861), in the foundation of which he was aided 'by his friend, Mr. R. Reynolds Rowe, F.S.A.