(Russia) Diffiety Institute - Russian Academy of Natural Sciences, Pereslavl-Zalessky. Research in algebra and geometry of differential equations and cohomological physics. - http://diffiety.org/
(UK) University of York - Mathematical Physics Group. People, research, events, publications, resources. - http://www.york.ac.uk/depts/maths/physics/
(UK) Edinburgh - Edinburgh Mathematical Physics Group, a group of mathematicians and physicists from across the Edinburgh Universities. People, research, seminars, jobs and resources. - http://www.maths.ed.ac.uk/EMPG/
(UK) University of Cambridge - Department of Applied Mathematics and Theoretical Physics. Details of research, undergraduate and postgraduate study, and computing in the department. - http://www.damtp.cam.ac.uk/
(Sweden) KTH - Mathematical Physics Group of the Department of Physics. Faculty, projects, publications, courses. - http://www.theophys.kth.se/mathphys/
(Poland) Warsaw University - Department of Mathematical Methods in Physics (Katedra Metod Matematycznych Fizyki, KMMF). Research staff, preprints, seminars. - http://info.fuw.edu.pl/KMMF/
(Ireland) NUI Galway - Department of Mathematical Physics. Staff, research, courses, competitions. - http://www.maths-physics.nuigalway.ie/
(Belgium) Ghent University - Department of Mathematical Physics and Astronomy. Research interests and news. - http://maphyast.rug.ac.be/
(Australia) University of Adelaide - Mathematical Physics in the Department of Physics and Mathematical Physics. Research areas: quantum field theory, string theory, statistical mechanics, theoretical condensed matter. physics, general relativity, quantum gravity and cosmology - http://www.physics.adelaide.edu.au/mathphysics/
(Ireland) University College, Dublin - Department of Mathematical Physics. Information on staff, research, courses, seminars, prizes and history. - http://www.ucd.ie/~math-phy/
(Ireland) NUI Maynooth - Department of Mathematical Physics. Information about the staff, courses and research. Also features campus maps. - http://www.thphys.may.ie/
(Russia) Moscow Institute of Physics and Technology - Department of Air Dynamics and Cosmic Research; Physics of Nonequilibrium Systems Laboratory. The laboratory deals with the different types of nonequilibrium processes and systems. - http://neq.mipt.ru/
(UK) University of Oxford - Mathematical Physics Group. Includes a list of staff and publications, as well as details of colloquia. - http://www.maths.ox.ac.uk/mpg/
(Sweden) Lund Institute of Technology - Department of Mathematical Physics. Research interests: Theoretical nuclear physics, Elementary particles, Thermodynamics, Complex systems, Chaos. - http://www.matfys.lth.se
(USA) University of Texas - Center for Nonlinear Dynamics. People, publications, research, courses. - http://chaos.ph.utexas.edu/
(USA) Duke University - Center for Nonlinear and Complex Systems. People, research, seminar, resources. - http://www.phy.duke.edu/cncs/
(USA) Institute for Nonlinear Science - University of California, San Diego. People, research, seminars, meetings, FTP archive and web resources. - http://inls.ucsd.edu/
(Germany) Ruhr-Universität Bochum - Mathematical Physics Workgroup (Arbeitsgruppe Mathematische Physik). Members, lectures and seminars, research projects and collaborators. - http://www.ruhr-uni-bochum.de/mathphys/
(Portugal) University of Lisbon - Mathematical Physics Group (GFM). Members, research topics, preprints, meetings, jobs. - http://gfm.cii.fc.ul.pt/
(Austria) Erwin Schroedinger Institute for Mathematical Physics - ESI was founded with the aim of providing a meeting place for leading experts in Mathematical Physics and Mathematics in the international scientific community. - http://www.esi.ac.at/ESI-home.html
International Association of Mathematical Physics - The International Association of Mathematical Physics (IAMP) was founded in order to promote research in mathematical physics. The Association invites mathematicians and physicists (including students) interested in this goal to become members. - http://www.iamp.org/