John Adolph, Duke of Schleswig-Holstein-Sonderburg-Norburg
|John Adolph, Duke of Schleswig-Holstein-Norburg|
|Noble family||House of Oldenburg|
|Father||John II, Duke of Schleswig-Holstein-Sonderburg|
|Mother||Elizabeth of Brunswick-Grubenhagen|
|Born||15 September 1576|
|Died||21 February 1624(aged 47)|
John Adolph of Schleswig-Holstein-Sonderburg-Norburg (German: Johann Adolf or Hans Adolf; 15 September 1576 – 21 February 1624), was a Duke of Norburg at Als. He was the son of John II of Schleswig-Holstein-Sonderburg and his wife Elizabeth of Brunswick-Grubenhagen. When his father died in 1622, he inherited the area around the Norburg on the island of Als and thus became the first Duke of Schleswig-Holstein-Sonderburg-Norburg. He went to Rome to study from 1596 to 1597, like his father had done.
He was engaged to Maria Hedwig, a daughter of Duke Ernest Louis of Pomerania-Wolgast. However, she died in 1606, before a marriage could take place. He remained unmarried.
John Adolph died in 1624. His brother Frederick inherited his title and his land.