Eisenstein may refer to:
In places:
- Eisenstein, Wisconsin, a US town
- Bayerisch Eisenstein in Germany, across the border from Železná Ruda
- Markt Eisenstein (German name for Železná Ruda), in the Czech Republic, across the border from Bayerisch Eisenstein
In film:
- Eisenstein (film), a 2000 biopic on Sergei Eisenstein
In fiction:
- Eisenstein (spacecraft), a fictional spacecraft, featured in Flight of the Eisenstein, a 2007 novel by James Swallow for the Horus Heresy series of Warhammer 40,000.
In mathematics:
- Eisenstein criterion
People with the surname Eisenstein:
- Eisenstein (surname)