Frederick III, Duke of Saxe-Gotha-Altenburg
| Frederick III | |
|---|---|
| Duke of Saxe-Gotha-Altenburg | |
| Reign | 23 March 1732 – 10 March 1772 |
| Predecessor | Frederick II |
| Successor | Ernst II |
| Born | 14 April 1699 Gotha |
| Died | 10 March 1772 (aged 72) Gotha |
| Spouse | |
| Issue | Frederick, Hereditary Prince of Saxe-Gotha-Altenburg Prince Ludwig Princess Fredericka Luise Ernst II Princess Sophie Prince August |
| House | Saxe-Gotha-Altenburg |
| Father | Frederick II, Duke of Saxe-Gotha-Altenburg |
| Mother | Magdalene Augusta of Anhalt-Zerbst |
Frederick III, Duke of Saxe-Gotha-Altenburg (14 April 1699 – 10 March 1772), was a duke of Saxe-Gotha-Altenburg.