Sesma is a town and municipality in the province and autonomous community of Navarre, in northern Spain. It lies within the Ebro Valley area of Navarre, a region of the autonomous community that extends southward toward the river Ebro.
During the First Carlist War, Sesma was the scene of action on 5 November 1834 between Liberal forces under Narciso Lopez and Carlist forces under Mendiry. The engagement followed the Carlist victory at Vitoria.