| Johanna Magdalena of Saxe-Altenburg | |
|---|---|
 Johanna Magdalena of Saxe-Altenburg, copper engraving by Johann Hainzelmann, in the Kupferstichkabinett in Dresden (item A 26876 in A 288ab, 4 (D XVI-XVIII)) | |
| Duchess consort of Saxe-Weissenfels | |
| Tenure | 1671–1680 |
| Born | 14 January 1656 Altenburg |
| Died | 22 January 1686 (aged 30) Weißenfels |
| Burial | Church of Neu-Augustenburg castle in Weißenfels |
| Spouse | Johann Adolf I, Duke of Saxe-Weissenfels |
| Issue among others... | Magdalene Sibylle, Duchess of Saxe-Eisenach Johann Georg, Duke of Saxe-Weissenfels Princess Johanna Wilhelmina Christian, Duke of Saxe-Weissenfels Anna Maria, Countess of Promnitz Sophia, Margravine of Brandenburg-Bayreuth Johann Adolf II, Duke of Saxe-Weissenfels |
| House | House of Wettin |
| Father | Frederick William II, Duke of Saxe-Altenburg |
| Mother | Magdalene Sibylle of Saxony |
Johanna Magdalena of Saxe-Altenburg (14 January 1656 in Altenburg – 22 January 1686 in Weißenfels) was a member of the House of Wettin. She was a Duchess of Saxe-Altenburg by birth and by marriage a Duchess of Saxe-Weissenfels-Querfurt.