(Australia) The University of Queensland: Centre for Discrete Mathematics and Computing.
(Austria) Academy of Sciences: Institute of Discrete Mathematics.
(Europe) Combinatorics, Geometry and Computation: A European graduate programme.
(France) INRIA: Algorithms Project. Interests in design and analysis of algorithms, computer algebra, combinatorial analysis and asymptotics.
(France) Laboratoire d'informatique de l'IGM: Research into the relations between algebra and combinatorics.
(Italy) Catania University: Catania Combinatorial Group. History, people, activities, visitors.
(Japan) Tsukuba: Japanese Center for Combinatorics and its Applications. A virtual research centre. Links, lists.
(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.
(New Zealand) University of Auckland: Centre for Discrete Mathematics and Theoretical Computer Science.
(South Korea) Pohang University of Science and Technology: Combinatorial and Computational Mathematics Centre (Com2MaC).
(Sweden) Gothenburg: Combinatorics group at Chalmers University of Technology and Gothenburg University.
(UK) London School of Economics: Centre for Discrete and Applicable Mathematics. Members, activities, publications.
(UK) Queen Mary College, London: Design Research Group. Courses, lecture notes, members, design resources.
(USA) Texas A+M: Combinatorics/Number Theory Directory. Members, interests. Graph theory, combinatorial number theory.
British Combinatorial Committee: Conference listings, bulletin and links maintained by Peter Cameron.
CADCOM: Committee for the Advancement of Discrete and Combinatorial Mathematics.
Combinatorial Mathematics Society of Australasia: Combinatorics throughout Australia, New Zealand and neighbouring countries.