List of things named after Ernst Witt
# List of things named after Ernst Witt

These are things named after Ernst Witt, a German mathematician.

* Bourbaki–Witt theorem
* Hall–Witt identity
* Hasse–Witt matrix
   * Hasse–Witt invariant
* Poincaré–Birkhoff–Witt theorem, usually known as the PBW theorem
* Shirshov–Witt theorem
* Witt algebra
* Witt decomposition
* Witt design (Witt geometry)
* Witt group
* Witt index
* Witt polynomial
* Witt ring
   * Grothendieck-Witt ring
* Witt scheme
* Witt's theorem
* Witt vector
   * Witt vector cohomology
