The Gran Vía de Don Diego López de Haro is the main avenue of the city of Bilbao, Basque Country (Spain). It is the  the commercial and financial centre of Bilbao, with the buildings of the banks BBVA, BBK and Caja Laboral, the El Corte Inglés department store, the Headquarters of the Regional Government of Bizkaia and the Sota Building.

Its design was presented in 1876 by the architect Achúcarro and the engineers Alzola and Hoffmeyer. It is 50 metres wide and 1.5 kilometres long between the Plaza Circular and Plaza del Sagrado Corazón. Before the halfway point is the Plaza de Federico Moyúa, the heart of the Ensanche district of Bilbao, home to the Chávarri Palace and the Hotel Carlton.