Deportivo Alavés B, S.A.D., usually known as Alavés B, is a Spanish football team based in Vitoria-Gasteiz, in the autonomous community of Basque Country. Founded in 1959 it is the reserve team of Deportivo Alavés, and currently plays in Segunda Federación – Group 2, holding home matches at Instalaciones de Ibaia-José Luis Compañon, the club's training facilities with 2,500 seat-capacity.
The team's home kit is blue and white-striped shirt, blue shorts and white socks.