August, Duke of Schleswig-Holstein-Sonderburg-Beck was a Danish nobleman. From 1675 until his death, he was the ruling Duke of Schleswig-Holstein-Sonderburg-Beck. He was the second duke of this appanage.
- Occupation
- aristocrat, military personnel
- Citizenship
- Germany
- Born
- February 13, 1652
- Died
- September 26, 1689