Biandina (), also known as Biadyna (Βιάδυνα), Biandyna (Βιάνδυνα), Biadinupolis or Biadinoupolis (Βιαδινουπολίς),Βιαδ[ιν]ουπολείταν, August Böckh, Insc. No. 1336. was a town of ancient Laconia, located between Acriae and Asopus. Its name appears in an inscription reported by August Böckh.

Its site is located near the modern Elia/Elaia.

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