(UK) London School of Economics  
   Centre for Discrete and Applicable Mathematics. Members, activities, publications.
   http://www.cdam.lse.ac.uk/

(Japan) Tsukuba  
   Japanese Center for Combinatorics and its Applications. A virtual research centre. Links, lists.
   http://infoshako.sk.tsukuba.ac.jp/jcca/

(New Zealand) University of Auckland  
   Centre for Discrete Mathematics and Theoretical Computer Science.
   http://www.cs.auckland.ac.nz/CDMTCS/

(Netherlands) Euler Institute for Discrete Mathematics and its Applications (EIDMA)  
   Discrete Algebra and Geometry, Coding Theory, Information Theory and Cryptology, Combinatorial Optimization and Algorithms, Graph Theory.
   http://www.win.tue.nl/math/eidma/

(France) INRIA  
   Algorithms Project. Interests in design and analysis of algorithms, computer algebra, combinatorial analysis and asymptotics.
   http://algo.inria.fr/

(UK) Open University  
   Combinatorics Research Group. Graph theory, design theory, history of combinatorics, combinatorial computing.
   http://mcs.open.ac.uk/puremaths/pmd_research/pmd_combin.html

(Sweden) Gothenburg  
   Combinatorics group at Chalmers University of Technology and Gothenburg University.
   http://www.math.chalmers.se/Math/Research/Combinatorics/

(South Korea) Pohang University of Science and Technology  
   Combinatorial and Computational Mathematics Centre (Com2MaC).
   http://com2mac.postech.ac.kr/

(Europe) Combinatorics, Geometry and Computation  
   A European graduate programme.
   http://www.cgc.ethz.ch/

(UK) Queen Mary College, London  
   Design Research Group. Courses, lecture notes, members, design resources.
   http://www.maths.qmul.ac.uk/~pjc/design/drg.html

(USA) Texas A+M  
   Combinatorics/Number Theory Directory. Members, interests. Graph theory, combinatorial number theory.
   http://www.math.tamu.edu/research/research_areas/cnt.html

(France) Laboratoire d'informatique de l'IGM  
   Research into the relations between algebra and combinatorics.
   http://phalanstere.univ-mlv.fr/

(Italy) Catania University  
   Catania Combinatorial Group. History, people, activities, visitors.
   http://www.dmi.unict.it/~gquattro/ctcombinatoria/

(Australia) The University of Queensland  
   Centre for Discrete Mathematics and Computing.
   http://www.maths.uq.edu.au/cdmc/

(Austria) Academy of Sciences  
   Institute of Discrete Mathematics.
   http://www.ricam.oeaw.ac.at/dismat/

SIAM Activity Group on Discrete Mathematics  
   Provides an opportunity to unify pure discrete mathematics and areas of applied research.
   http://www.siam.org/siags/siagdm.htm

Combinatorial Mathematics Society of Australasia  
   Combinatorics throughout Australia, New Zealand and neighbouring countries.
   http://www.maths.uq.edu.au/~db/CMSA/cmsa.html

CADCOM  
   Committee for the Advancement of Discrete and Combinatorial Mathematics.
   http://www.dms.auburn.edu/~rodgec1/cadcom/

British Combinatorial Committee  
   Conference listings, bulletin and links maintained by Peter Cameron.
   http://www.maths.qmw.ac.uk/~pjc/bcc/