| August Philipp | |
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| Duke of Schleswig-Holstein-Sonderburg-Beck | |
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| Predecessor | none |
| Successor | August, Duke of Schleswig-Holstein-Sonderburg-Beck |
| Spouse | Clara of Oldenburg Sidonia of Oldenburg Maria Sibylla of Nassau-Saarbrücken |
| Issue | |
| Sophie Luise, Countess of Lippe-Brake August, Duke of Schleswig-Holstein-Sonderburg-Beck Frederick Louis, Duke of Schleswig-Holstein-Sonderburg-Beck Dorothea Amalia, Countess of Lippe-Alverdissen Sophia Elisabeth Wilhelmine Augusta Luise Clara Sophie Eleonore Maximilian William Anton Günther Ernst Kasimir Karl Gustav |
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| Full name | |
| August Philipp | |
| House | Oldenburg |
| Father | Alexander, Duke of Schleswig-Holstein-Sonderburg |
| Mother | Dorothea of Schwarzburg-Sondershausen |
| Born | 11 November 1612 Sonderburg, Duchy of Schleswig |
| Died | 6 May 1675 (aged 62) Beck Castle, Löhne, Westfalen |
August Philipp, Duke of Schleswig-Holstein-Sonderburg-Beck (11 November 1612 – 6 May 1675) was a Danish-German prince and member of the House of Oldenburg. After acquiring the estate of Beck in Westfalen in 1646, he took the title of Duke of Schleswig-Holstein-Sonderburg-Beck.
August Philipp was born in 1612 in Sonderburg, Duchy of Schleswig (now Sønderborg, Denmark) as the fifth son of Alexander, Duke of Schleswig-Holstein-Sonderburg and Dorothea von Schwarzburg-Sondershausen. In 1633, at the age of 21, he emigrated to Germany.
He married Marie Sibylle of Nassau-Saarbrücken on April 12, 1651 in Beck.
August died in Beck and was succeeded as duke first by his oldest son, August, Duke of Schleswig-Holstein-Sonderburg-Beck, and later by his second son, Friedrich Ludwig, Duke of Schleswig-Holstein-Sonderburg-Beck.