Ahaitz or Ahaize is a Basque place name referring to flat areas in mountainous ranges favorable to human settlement.Jean-Baptiste Orpustan, Nouvelle toponymie basque, Presses Universitaires de Bordeaux, . It literally means "rock".
It may refer to: Ahaize, a hamlet of the commune of Ossès. Ahaxe, a commune of the Pyrénées-Atlantiques.
It is at the origin of place names as: Ahetze, a commune of the Pyrénées-Atlantiques and a former mande of Lower Navarre. Ahaizparren: Hasparren, Azparren, Asparren Aezkoa (Ahezcoa in 1137), a valley of Navarre.
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