The Weld-Blundell Prism (WB) is a clay, cuneiform-inscribed vertical prism housed in the Ashmolean Museum in Oxford. The prism was found in a 1922 expedition in Larsa in modern-day Iraq by British archaeologist Herbert Blundell. The prism's four sides, about 20 cm × 9 cm, are inscribed in Sumerian with lists of the kings of Sumer; each side contains the text in two columns: this is the famous Sumerian King List. It is considered the most complete of the Sumerian King Lists which have been found, of which there are approximately 25 more or less complete fragments as of 2016.