William John Clappison (27 June 1937 – 21 February 2013) was an English ceramic and glass designer. Although Clappison is not as familiar as many of his British contemporaries (his name not appearing on individual pieces), his work sold in the millions. Initially working out of the Hornsea Studio, partly financed by his father, Clappison would later work for Ravenhead Glass and Royal Doulton. Some of his more popular designs included the Heirloom range for Hornsea Pottery, his Studiocraft vases[1] and his plain white Aphrodite vase,[2] which became a popular wedding present of its time.[3]