Tertenia is a comune (municipality) in the Province of Nuoro in the Italian region Sardinia, located about 70 kilometres (43 mi) northeast of Cagliari and about 25 kilometres (16 mi) south of Tortolì.

Tertenia borders the following municipalities: Cardedu, Gairo, Jerzu, Lanusei, Loceri, Osini, Ulassai.

It is located in a high valley at the base of Mt.

Ferru, along the Rio Quirra river.

This Sardinia location article is a stub.