Tartaro is the name of a character of the Basque Mythologie which is a Cyclops. It is the name which is currently most known, but it was called, according to the times and the places, Torto , or Tartalo . One finds also the form Tartar . One also gave him the names of Anxo or Alarabi .

Characteristics and adventures that one ready correspond to him of enough close with those of the cyclops Polyphème. As him he lives in a cave, he raises sheep, and he devours the men whom he can catch, until the day when one of prisoners, more malignant than escapes him, him by bursting its eye and while hiding among its sheep. Its other adventures are primarily of the type of the ogre deceived . The Basque tradition often opposes a young déluré boy called to him Mattin Ttipi (Small Martin), or Mattin Txirula (Martin the player of flute). It belongs to the great number of cyclops which one finds throughout the Pyrenean chain and in the Alps ( Bécut , Ulhart …).

Many places of the Basque mountain attest the dwelling of Tartaro ( Tartaloetxeta ).

Versions of tales probably more recent tend to confuse Tartaro with other Basque mythological figures, the such Basajaun or wild lord , or a lamina (the laminak are dwarves with the varied characteristics).