| Princess Augusta | |
| Duchess consort of Schleswig-Holstein-Sonderburg-Augustenburg | |
| Spouse: | Ernest Günther, Duke of Schleswig-Holstein-Sonderburg-Augustenburg |
| House: | House of Schleswig-Holstein-Sonderburg-Glücksburg (by birth) House of Schleswig-Holstein-Sonderburg-Augustenburg (by marriage) |
| Father: | Philip, Duke of Schleswig-Holstein-Sonderburg-Glücksburg |
| Mother: | Sophie Hedwig of Saxe-Lauenburg |
| Birth Date: | 27 June 1633 |
| Birth Place: | Glücksburg |
| Death Place: | Augustenborg Palace, Augustenborg, Denmark |
Princess Augusta of Schleswig-Holstein-Sonderburg-Glücksburg (27 June 1633 - 26 May 1701) was a Danish-German princess of the senior Glücksburg line of the Duke of Schleswig-Holstein. She was the first Duchess of Augustenburg by marriage. Augustenborg Palace, and as a consequence the nearby town, were named in honor of her.
The great-granddaughter of king Christian III of Denmark, she was the third daughter, eighth by birth, of Philip, Duke of Schleswig-Holstein-Sonderburg-Glücksburg and Princess Sophia Hedwig of Saxe-Lauenburg (1601-1660).[1] She was sister of Sophia Dorothea of Schleswig-Holstein-Sonderburg-Glücksburg
On 15 June 1651, at Copenhagen, she married her first cousin Ernest Günther (14 October 1609 - 18 January 1689), son of Duke Alexander of Schleswig-Holstein-Sonderburg and his wife Countess Dorothea of Schwarzburg-Sondershausen (1579-1639). They had ten children: