Albert III may refer to:
- Albert III, Count of Namur (1048–1102)
- Albert III, Count of Habsburg (died 1199)
- Albert III, Margrave of Brandenburg-Salzwedel (–1300)
- Albert III, Duke of Saxe-Lauenburg (1281–1308)
- Albert III, Prince of Anhalt-Zerbst (died 1359)
- Albert III, Count of Gorizia (died 1374)
- Albert III of Mecklenburg (c. 1338 – 1412)
- Albert III, Duke of Austria (1349–1395)
- Albert III, Duke of Saxe-Wittenberg (1375/1380–1422)
- Albrecht III Achilles, Elector of Brandenburg (1414–1486)
- Albert III, Duke of Bavaria (1438–1460)
- Albert III, Duke of Saxony (1443–1500)