Patrick Cordier (born February 1, 1961) is a mineralogist who uses experimental and numerical approaches to study the plasticity of geological materials.

He completed a doctoral thesis on the plasticity of quartz, directed by Professor Jean-Claude Doukhan, at the University of Lille 1[5] in 1989.

[7] Cordier is a specialist in transmission electron microscopy and has devoted himself particularly to the study of crystal defects such as dislocations and the plasticity of minerals.

With Philippe Carrez, he is currently developing an approach to this problem based on multi-scale numerical modelling.

He has regularly visited at the Bayerisches Geoinstitut[8] (Bayreuth, Germany) at the University of Bayreuth since 1998 to carry out deformation experiments at very high pressures and is presently a visiting professor at the Institute of Mechanics, Materials and Civil Engineering of the Université Catholique de Louvain, Belgium.