Johann Adolf II, Duke of Saxe-Weissenfels
| Johann Adolf II | |
|---|---|
| Duke of Saxe-Weissenfels | |
Portrait by Antoine Pesne, c. 1740–1746 | |
| Duke of Saxe-Weissenfels | |
| Reign | 28 June 1736 – 14 May 1746 |
| Predecessor | Christian, Duke of Saxe-Weissenfels |
| Successor | None (line extinct; territory inherited by Frederick Augustus II, Elector of Saxony) |
| Born | 19 August 1685 Weißenfels, Duchy of Saxe-Weissenfels |
| Died | 14 May 1746 (aged 60) Leipzig, Electorate of Saxony |
| Spouse | Johannette Antoinette Juliane of Saxe-Eisenach
(m. 1721) |
| Issue | 6 (all died in infancy or childhood) |
| House | Wettin |
| Father | Johann Adolf I, Duke of Saxe-Weissenfels |
| Mother | Johanna Magdalena of Saxe-Altenburg |
| Religion | Lutheran |
Johann Adolf II (19 August 1685 – 14 May 1746) was the last duke of Saxe-Weissenfels from 1736 to 1746. Following his death without surviving male issue, the Duchy returned to Electoral Saxony. Johann Adolf was also a commander in the Saxon Army.