Friedrich Duke of Saxe Altenburg
- Category : Notable-Famous-Royal-family
- Type : PSP
- Profile : 1/3 - Investigating / Martyr
- Definition : Split - Small (57)
- Incarnation Cross : RAX Explanation 2
German nobility, the duke of Saxe-Hildburghausen (1780–1826) and duke of Saxe-Altenburg (1826–1834). In Hildburghausen on 3 September 1785, Frederick married Duchess Charlotte Georgine of Mecklenburg-Strelitz.
They had twelve children. He died on 29 September 1834.