Demiurge is an artisan-like figure in some philosophies responsible for fashioning and maintaining the physical universe.
Demiurge may also refer to:
- Demiurge (magistrate), a magistrate in Peloponnesian and other Ancient Greek city-states
- Demiurge Studios, a video game developer
- Demiurge Unit, an LED design company
- Project Demiurge, an unpublished expansion of Heresy: Kingdom Come
- "Demiurge", a song by Meshuggah on their 2012 album Koloss