Albert II, Duke of Brunswick-Lüneburg (German: Albrecht II., Herzog zu Braunschweig-Lüneburg; 1 November 1419 – 15 August 1485), was a Prince of Grubenhagen; he reigned from 1440 until his death in 1485. Henry IV came of age in 1479 and agreed with his uncle on a division of their territory. Albert kept Herzberg Castle and Osterode Castle, while Henry received . The towns of Einbeck and Osterode were ruled jointly. Albert died in 1485 and was buried in Osterode am Harz.