Lizartza (also spelled Lizarza) is a town in the province of Gipuzkoa, within the autonomous community of the Basque Country in northern Spain. It lies in the Tolosaldea area of Gipuzkoa, roughly 30 kilometres south of San Sebastián and close to the town of Tolosa.
The municipality is small and rural, set in hilly green countryside typical of the Basque interior. Its name is Basque in origin, and both Basque and Spanish forms are in official use. Local life has traditionally centred on agriculture and livestock, with the surrounding landscape of wooded slopes and farmsteads.