William Barnard Clarke, sometimes mis-written Bernard, was an English architect, cartographer, archaeological writer and art collector, numismatist and literary translator. He was the founding president of the Architectural Society of London, 1831, and supervised the restoration of the Eleanor Cross at Waltham Cross in 1831–1832. Producing a celebrated series of maps or plans of European and Russian cities, and taking a strong interest in the discoveries at Pompeii, he travelled much in Europe and from the 1840s had his home and collections in the Grand Duchy of Baden. In 1865 he published an English translation of Goethe's Faust. He was an elder brother of the artist Harriet Ludlow Clarke, and a brother-in-law of Henry Bellenden Ker.