Janis Buls
- Combinatorics on words, algebraic automata theory.
- http://home.lanet.lv/%7ebuls/

Jean-Sébastien Sereni
- Graph theory, networks, combinatorics.
- http://kam.mff.cuni.cz/~sereni/

David Galvin
- Graph theory, combinatorics and discrete probability.
- http://www.math.upenn.edu/~dgalvin/

Wesley Pegden
- Combinatorics and graph theory.
- http://people.cs.uchicago.edu/~wes

Jean-Yves Thibon
- Algebraic combinatorics and representation theory .
- http://igm.univ-mlv.fr/~jyt/index_en.html

Vašek Chvátal
- Hamiltonian cycles, perfect graphs and combinatorial optimization.
- http://www.cs.concordia.ca/~chvatal/

Tom Leighton
- Algorithms for network applications and cryptography.
- http://theory.csail.mit.edu/~ftl/

Fan Chung Graham
- Ramsey theory, spectral graph theory.
- http://math.ucsd.edu/~fan/

Erlendur S. Thorsteinsson
- Algorithms, combinatorics and optimization.
- http://www.mmedia.is/esth/

Ted Spence
- Classification of combinatorial designs.
- http://www.maths.gla.ac.uk/~es/

Sebastien Roch
- Applied probability and theoretical computer science.
- http://www.stat.berkeley.edu/users/sroch/index.htm

Joshua Cooper
- Combinatorial problems arising in number theory, algebraic geometry and coding theory.
- http://cims.nyu.edu/~cooper/

Jaroslav Nesetril
- Ramsey theory.
- http://kam.mff.cuni.cz/~nesetril/

Janos Pach
- Combinatorial geometry.
- http://www.math.nyu.edu/~pach/

John P. Morgan
- Statistics and experimental designs.
- http://www.stat.vt.edu/facstaff/jpmorgan.html

Gilles Zemor
- Combinatorics, coding theory, cryptography and additive number theory.
- http://www.infres.enst.fr/~zemor/

Leonard H. Soicher
- Design theory and combinatorial computing.
- http://www.maths.qmul.ac.uk/~leonard/

Peter Dobcsanyi
- Statistical design theory and its applications, LOWX software.
- http://www.designtheory.org/~peter/

Raul Banos
- Optimization in complex problems and heuristics.
- http://www.ual.es/~rbanos

Erik Demaine
- Combinatorics, theory of computation and algorithms.
- http://theory.lcs.mit.edu/~edemaine/

Juergen Bierbrauer
- Discrete mathematics and its interactions with geometry, cryptology and algorithms.
- http://www.math.mtu.edu/~jbierbra/

Doron Zeilberger
- Combinatorics and automatic formal identities proving.
- http://www.math.rutgers.edu/~zeilberg/

Patrice Ossona de Mendez
- Topological graph theory, combinatorics and pliant programming.
- http://www.ehess.fr/centres/cams/person/pom/index.html

Herbert Wilf
- Combinatorics and generating functions.
- http://www.cis.upenn.edu/~wilf/

Gregory Gutin
- Graph theory and algorithms, combinatorial optimisation, linear and integer programming.
- http://www.cs.rhbnc.ac.uk/home/gutin/

Quentin Stout
- Discrete mathematics, statistics, algorithms and parallel computing.
- http://www.eecs.umich.edu/~qstout/

Neil James Alexander Sloane
- Combinatorics, integer sequences, codes, sphere packings, graphs and lattices.
- http://www.research.att.com/~njas/

James Propp
- Combinatorics, game theory, probability theory and dynamical systems.
- http://www.math.wisc.edu/~propp/

Brendan McKay
- Combinatorics, graph theory and related software.
- http://cs.anu.edu.au/~bdm/

Alan Frieze
- Probabilistic combinatorics, theoretical computer science and operations research.
- http://www.math.cmu.edu/~af1p/

Peter Cameron
- Permutation groups, and the finite or infinite structures on which they act.
- http://www.maths.qmul.ac.uk/~pjc/

Nantel Bergeron
- Algebraic combinatorics.
- http://www.math.yorku.ca/bergeron/

Rosemary A. Bailey
- Experimental designs and statistics.
- http://www.maths.qmul.ac.uk/~rab/