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