The Numantine War (from Bellum Numantinum in Appian's Roman History) is the last conflict of the Celtiberian Wars fought by the Romans to subdue those people along the Ebro.

It is a twenty year long conflict between the Celtiberian tribes of Hispania Citerior and the Roman government.

It begins in 154 BCE as a revolt of the Celtiberians of Numantia on the Douro.

The first phase of the war ends in 151, but, in 143, war flares up again with a new insurrection in Numantia.