Aiza is a name of Basque Spanish origin and means cliff or rock. Aiza is a spelling variation on Arista, or in Basque, Aritza. The etymological meaning of Aiza (from P.Gmc.*aiza) is "honor"or 'honored ruler'. This spelling was found in 1127 in Navarre, now in Spain. Other variations of the surname are Ariza, Aritza and Aixa.
King Íñigo Íñiguez (Basque, Eneko Enekones) called Arista in Spanish and Aiza or Aritza in Basque was the first king of Navarre, Spain. The House of Aritza (Aiza) was the ruling house of the Basque Kingdom of Navarra from 824 AD to 905 AD.