Haro (Spanish: [ˈaɾo] ⓘ) is a town and municipality in the northwest of La Rioja province in Northern Spain.

Its architectural heritage includes the plateresque main entrance of the Church of Santo Tomás, the work of Felipe Vigarny, numerous palaces, and the old town, which was declared a Historic-Artistic Site in 1975.

[citation needed] The first mention of Haro dates back to the year 1040, in a document of king García Sánchez III of Navarre"el de Nájera".

[citation needed] Alfonso VI of León and Castile entrusted the tenencia to Diego López I de Haro after the death of Count García Ordóñez and the first of the lords of Biscay to attach the name of this town to his patronymic was Diego's son, Lope Díaz I de Haro.

Féderico Paaternina was founded in 1897 and became a very influential name in the wine business in Spain until its final collapse in 2010 when the Bodega closed and the brand of Banda Azul was sold to Berberana following a very difficult period after the appropriation of their owners Rumasa in 1983 by the new Spanish Government and the failure of the subsequent owner to keep the company as a going concern.