The Pinpedunni (also Pimpedunni) were a people of Aquitania, named only in the list of Aquitanian peoples given by Pliny. They bore a Celtic name and are counted among the Celtic groups settled towards the western Pyrenees, though their exact seat is unknown.
The people are named once, in Pliny's list of the peoples of Aquitania, among a string of small Pyrenean groups together with the Lassunni, the Vellates and the Toruates. The manuscripts give the name as Pinpedunni, with the variants Pinpedumni and Pindedunni.
Paul-Marie Duval took the name to contain the Celtic word for 'five' (pimpe) attached to dunum ('stronghold'), yielding a sense such as 'the five strongholds'. Jean-Pierre Bost counts the Pinpedunni among the groups of Celtic origin that had moved in a region inhabited by Aquitani, alongside the Tarbelli.
Duval placed the Pinpedunni among the peoples of the list that cannot be located. Following Camille Jullian's reading, he suggested a position south of Cambo, in the country rising towards the pass of Roncevaux. It would set them in what is now the Basque Country, within a body of several other small mountain groups later governed from Dax.
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