The Aars stone (Danish: Års-stenen) or DR 131 is a late Viking Age runestone located on a mound in the churchyard at Aars in Himmerland, Denmark. Dated to the late 10th to early 11th century, it bears an inscription in the Younger Fuþark in memory of Toke Gormsson, known as Valtoke, who died at the Battle of Fýrisvellir.