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