Wacho or Waccho was king of the Lombars before they entered Italy from an unknown date (perhaps circa 510) until his death in 539. His father was Unichus. Wacho usurped the throne by assassinating (or having assassinated) his uncle, King Tato (again, probably around 510). Tato's son Ildichis fought with him and fled to the Gepids where he died. Wacho had good relations with the Franks.