According to the Book of Mormon, Antionah was a Nephite ruler that lived on the American continent in the first century B.C. He is mentioned briefly in the 12th chapter of the Book of Alma. He was a ruler in the wicked city of Ammonihah, and was skeptical of Alma and Amulek's teachings regarding the resurrection. Though there were some who believed the teachings of these two prophets, the city of Ammonihah eventually rejected them, and according to the Book of Mormon narrative, was destroyed by the Lamanites as divine punishment.