Alberto López de Munain Ruiz de Gauna (born December 5, 1972) is a Spanish former professional road bicycle racer. He became professional in 1996 and ended his professional career in 2005. He rode his entire career for the Euskaltel–Euskadi team.

During the 2005 Giro d'Italia, he suffered a terrible crash on stage two, and was diagnosed with a hydropneumothorax caused by nine broken ribs, a broken left clavicle, a broken shoulder blade and damage to his left shoulder. He did not race professionally afterwards.