Albrecht IV, Duke o Saxe-Eisenach
| Albrecht IV | |
|---|---|
| Duke o Saxe-Eisenach | |
 | |
| Duke o Saxe-Eisenach | |
| Ring | 1640–1644 |
| Predecessor | New Creation |
| Successor | Wilhelm o Saxe-Weimar |
| Born | 27 Julie 1599 Altenburg |
| Dee'd | 20 December 1644 (aged 45) Eisenach |
| Spouse | Dorothea o Saxe-Altenburg |
| Hoose | House of Wettin |
| Faither | Johann, Duke o Saxe-Weimar |
| Mither | Dorothea Maria of Anhalt |
| Releegion | Lutheran |
Albrecht, Duke o Saxe-Eisenach, (27 Julie 1599 – 20 December 1644) wis a ruler o the duchy o Saxe-Eisenach. He was the seventh (but fourth surviving) son o Johann, Duke o Saxe-Weimar, an Dorothea Maria o Anhalt. His regnal name Albrecht IV derives frae the numbering o the duchy o Saxony as a whole, not specifically tae the succession in Saxe-Eisenach.