Duke John Albert of Mecklenburg (1435–1480) was a member of the House of Mecklenburg, a noble family in northern Germany. He served as the Duke of Mecklenburg from 1464 until his death. His reign was marked by efforts to strengthen the duchy and improve its governance. John Albert was known for his diplomatic skills and alliances, particularly through marriage. He was married to Catherine of Saxony, which helped to solidify ties with the Electorate of Saxony. His leadership contributed to the stability and development of the region during a time of political change in Europe.