The Pellendones (also Pelendones Celtiberorum or Cerindones) were an ancient pre-roman people living on the Iberian Peninsula. From the early 4th century BC they inhabited the region near the source of the river Duero in what today is north-central Spain. The area comprises the north of Soria, the southeast of Burgos and the southwest of La Rioja provinces.
Possibly of mixed Illyrian and Celtic origin, the Pellendones migrated to the Iberian Peninsula around the 4th Century BC. Their original native name might have been *Kellendones and it is believed that they were related to the Gallic Belendi or Pelendi of the middle Sigmatis (today's Leyre) river valley (approximately today's Belin-Béliet territory) in Gallia (Gaul). They spoke a 'Q-Celtic' language.
A predominantely stock-raising people that practiced transhumance in the grazing lowlands of the Ebro valley, they had their capital at Visontium (Vinuesa – Soria), and are credited as being the original founders of Numantia (Muela de Garray – Soria) and Savia (Soria?). They also controlled the towns of Aregrada (Ágreda? – Sória; Celtiberian mints: Areicoraticos/Arecorataz), Arenetum (Arnedo, near Inestrillas – La Rioja), Quelia/Quelium (Quel, near Arnedo – La Rioja; Celtiberian mint: Cueliocos) and Contrebia Leukade (Aguillar del Rio Alhama – La Rioja), although the location of Viscintium, Lutia (Cantalucia?), Olibia and Varia remains either incertain or unknown.