List of things named after Felix Klein

These are things named after Felix Klein (1849–1925), a German mathematician.

• Klein bottle
  • Solid Klein bottle
• Klein configuration
• Klein cubic threefold
• Klein four-group
• Klein geometry
• Klein graphs
• Klein's inequality
• Klein model
• Klein polyhedron
• Klein surface
• Klein quadric
• Klein quartic
• Kleinian group
• Kleinian integer
• Kleinian model
• Kleinian ring
• Kleinian singularity
• Klein's icosahedral cubic surface
• Klein's j-invariant
• Beltrami–Klein model
• Cayley–Klein metric
• Clifford–Klein form
• Schottky–Klein prime form

• Klein's Encyclopedia of Mathematical Sciences
• The Felix Klein Protocols
• Felix Klein medal, named after the first president of the ICMI (1908–1920), honours a lifetime achievement in mathematics education research.
• The Klein project of the IMU and ICMI aims to produce a book for upper secondary teachers that communicates the breadth and vitality of the research discipline of mathematics and connects it to the senior secondary school curriculum.