Samuel Prout (; 17 September 1783 – 10 February 1852) was a British watercolourist, and one of the masters of watercolour architectural painting. Prout secured the position of Painter in Water-Colours in Ordinary to King George IV in 1829 and afterwards to Queen Victoria. John Ruskin, whose work often emulated Prout's, wrote in 1844, "Sometimes I tire of Turner, but never of Prout". Prout is often compared to his contemporaries; Turner, Gainsborough, Constable and Ruskin, whom he taught. He was the uncle of the artist John Skinner Prout.