Demetrius I
Demetrius I is the name of:
- Demetrius I Poliorketes (by around 336 BC -283 BC), Macedonian general and Diadochenherrscher
- Demetrius I ( Bactria ) ( † 182 v. Chr./175 BC), King of the Bactrian Empire
- Demetrius I ( Soter ) ( † 150 BC), King of the Seleucid Empire
- Disambiguation