Klein
# Klein

Klein may refer to:

## People

* Klein (surname)
* Klein (musician)

## Places

* Klein (crater), a lunar feature
* Klein, Montana, United States
* Klein, Texas, United States
* Klein (Ohm), a river of Hesse, Germany, tributary of the Ohm
* Klein River, a river in the Western Cape province of South Africa

## Business

* Klein Bikes, a bicycle manufacturer
* Klein Tools, a manufacturer
* S. Klein, a department store
* Klein Modellbahn, an Austrian model railway manufacturer

## Arts

* Klein + M.B.O., an Italian musical group
* Klein Award, for comic art
* Yves Klein, French artist

## Mathematics

* Klein bottle, an unusual shape in topology
* Klein geometry
* Klein configuration, in geometry
* Klein cubic (disambiguation)
* Klein graphs, in graph theory
* Klein model, or Beltrami–Klein model, a model of hyperbolic geometry
* Klein polyhedron, a generalization of continued fractions to higher dimensions, in the geometry of numbers
* Klein surface, a dianalytic manifold of complex dimension 1

## Other uses

* Kleins, Lineman's pliers, a hand tool used by electricians and others
* Klein Technique, a movement/dance technique developed by Susan Klein and studied by Garry Stewart
