| Eleonore Sophie of Saxe-Weimar | |
|---|---|
| Duchess consort of Saxe-Merseburg-Lauchstädt | |
| Tenure | 1684–1687 |
| Born | 22 March 1660 Güstrow |
| Died | 4 February 1687 (aged 26) Lauchstädt |
| Spouse | Philipp, Duke of Saxe-Merseburg-Lauchstädt |
| House | Wettin |
| Father | John Ernest II, Duke of Saxe-Weimar |
| Mother | Christine Elisabeth of Schleswig-Holstein-Sonderburg |
Eleonore Sophie of Saxe-Weimar (22 March 1660 – 4 February 1687), was a German noblewoman member of the House of Wettin and by marriage Duchess of Saxe-Merseburg-Lauchstädt.
Born in Weimar, she was the third of five children born from the marriage of John Ernest II, Duke of Saxe-Weimar and Christine Elisabeth of Schleswig-Holstein-Sonderburg.