Albert II 'the Fat' Duke of Braunschweig and Lüneburg
- Born: Abt 1268
- Marriage: Rixa in 1284
- Died: 22 Sep 1318 about age 50
Albert (Latin Albertus; died 22 September 1318), called the Fat (pinguis), was duke of Brunswick-Lüneburg.
The second son of Albert the Tall, Duke of Brunswick-Lüneburg, Albert was a boy when his father died in 1279. He was first under guardianship of his uncle, Conrad, Bishop of Verden, and then of his elder brother, Henry the Strange, Duke of Brunswick-Lüneburg. In 1286 the three brothers divided their father's territory; Albert received the areas around Göttingen, Minden, Northeim, Calenberg, and Hanover. He made Göttingen his residence. In 1292, the third brother, William, died childless, and Albert and Henry quarrelled about William's share, the areas around Brunswick and Wolfenbüttel; Albert finally prevailed.
Albert married Rixa, daughter of Henry I, Prince of Werle, in 1284. They had the following children that reached adulthood:
* Adelaide, married John, Landgrave of Lower Hesse
* Richenza, Abbess of Gandersheim
* Luder, joined the Teutonic Order
* Albert, Bishop of Halberstadt (died 1358)
* Henry, Bishop of Hildesheim (died 1362)
* Otto (died 1344)
* Magnus (died 1369)
* Ernest (died 1367)
Albert married Rixa in 1284. (Rixa was born about 1275.)