Bernard II Tumapaler (or Tumpaler, Occitan: Bernat, Spanish: Bernardo; c. 1020 – between 1064 and 1090) was Duke of Gascony from 1039 to 1052 and Count of Armagnac from 1020 to 1061.
Bernard was the son of Adalais, daughter of William V of Aquitaine and Prisca, and Girard I Trancaleon, whom he succeeded in Armagnac.
Later his title to Gascony was contested by his uncle Guy Geoffrey, younger half-brother of Odo, but not descended from William II.
Eventually, after a protracted fight, Bernard was defeated at the Battle of La Castelle (fought between Cazères and Grenade on the Adour) and had to relinquish Gascony to Guy Geoffrey for 15,000 sous.
However, by then the title was almost empty, as most of Gascony had been dismembered and parcelled out as appanages, being in the hand of the counts of Béarn, Bigorre, Armagnac, Comminges, Astarac.