Pierre Euclide Conner (born 1932, Houston) is an American mathematician, who works on algebraic topology and differential topology (especially cobordism theory).In 1955 Conner received his PhD from Princeton University under Donald Spencer with thesis The Green's and Neumann's Problems for Differential Forms on Riemannian Manifolds. He was a post-doctoral fellow from 1955 to 1957 (and again in 1961–1962) at the Institute for Advanced Study.