Benayes is a relatively uncommon surname. Its origin and distribution are primarily associated with France, particularly the southwestern region. The name likely derives from a place name, possibly a village or geographical feature, and is topographic or habitational in nature. Topographic surnames are based on landmarks, and habitational surnames identify a person by the place where they lived or were born.
The meaning of "Benayes" itself is not definitively known, but it is suspected to be connected to the local dialect and geographical features of its origin in France. Genealogical research focusing on families bearing the surname Benayes often traces their roots to the Nouvelle-Aquitaine region. The prevalence of the name decreases significantly outside of France, though instances can be found in other countries due to migration.