List of geometers

A geometer is a mathematician whose area of study is geometry. Some important geometers and their main fields of work are:

Mathematicians

* Apastamba - Euclidean geometry, geometric algebra
* Apollonius of Perga - Euclidean geometry, conic sections
* Archimedes - Euclidean geometry
* Albert Victor Bäcklund
* Henry Frederick Baker - algebraic geometry
* Baudhayana - Euclidean geometry, geometric algebra
* Luigi Bianchi - differential geometry
* Janos Bolyai - non-Euclidean geometry
* Pierre Ossian Bonnet - differential geometry
* Brahmagupta - Euclidean geometry, cyclic quadrilaterals
* Lazare Nicolas Marguerite Carnot - projective geometry
* Élie Cartan
* Arthur Cayley
* Giovanni Ceva - Euclidean geometry
* Shiing-Shen Chern - differential geometry
* Delfino Codazzi - differential geometry
* J. H. Conway - sphere packing, recreational geometry
* H. S. M. Coxeter - theory of polytopes, non-Euclidean geometry, projective geometry
* Germinal Dandelin - Dandelin spheres in conic sections
* Julius Wilhelm Richard Dedekind
* René Descartes - invented the methodology analytic geometry
* Joseph Diaz Gergonne - projective geometry; Gergonne point
* Girard Desargues - projective geometry; Desargues' theorem
* Eratosthenes - Euclidean geometry
* Euclid - "Elements", Euclidean geometry
* Leonhard Euler
* Karl Wilhelm Feuerbach - Euclidean geometry
* Carl Friedrich Gauss - Theorema Egregium.
* Mikhail Gromov
* Hero of Alexandria - Euclidean geometry
* Robin Hartshorne - All kinds of geometry, algebraic geomety
* William Vallance Douglas Hodge
* Hypatia of Alexandria - Euclidean geometry
* Jyesthadeva - Euclidean geometry, cyclic quadrilaterals
* Katyayana - Euclidean geometry
* Felix Klein
* Sofia Vasilyevna Kovalevskaya
* Philippe de La Hire - projective geometry
* Nikolai Ivanovich Lobachevsky - non-Euclidean geometry
* Manava - Euclidean geometry
* Tobias Mayer
* John Milnor
* Hermann Minkowski - non-Euclidean geometry
* August Ferdinand Möbius - Euclidean geometry
* Gaspard Monge - descriptive geometry
* Max Noether - algebraic geometry
* Omar Khayyam - algebraic geometry, conic sections
* Blaise Pascal - projective geometry
* Daniel Pedoe
* Grigori Perelman
* John Playfair - Euclidean geometry
* Julius Plucker
* Henri Poincaré
* Jean-Victor Poncelet - projective geometry
* Pappus of Alexandria - Euclidean geometry, projective geometry
* Siméon-Denis Poisson
* Pythagoras - Euclidean geometry
* Bernhard Riemann - non-Euclidean geometry
* Giovanni Gerolamo Saccheri - non-Euclidean geometry
* Nilakantha Somayaji - geometric progressions
* Jakob Steiner - a champion of synthetic geometry methodology, projective geometry, Euclidean geometry
* Thabit ibn Qurra - analytic geometry, non-Euclidean geometry, conic sections
* Thales of Miletus - Euclidean geometry
* William Thurston
* Oswald Veblen - projective geometry, differential geometry
* Abu'l-Wáfa - spherical geometry, non-Euclidean geometry
* Shing-Tung Yau
* Zeno of Elea - Euclidean geometry

Others

* Albert Einstein - non-Euclidean geometry
* Maurits Cornelis Escher (trained as architect; worked as artist; was not a mathematician but used geometrical ideas extensively)
* George W. Hart - sculptor
* Buckminster Fuller
* Leonardo da Vinci - Euclidean geometry
* Isaac Newton - 3rd degree algebraic curves