Some interesting events:

  May 24-26, 2010, Combinatorial and geometric aspects of Hyperplane Arrangements, Pisa, Italy
  May 26-28, 2010, 10th Nordic Combinatorial Conference, Reykjavik, Iceland
  June 14-17, 2010, SIAM Conference on Discrete Mathematics, Austin, Texas, USA
  June 16-23, 2010, Budapest Semesters in Mathematics 25th Anniversary Reunion and Conference, Budapest, Hungary
  June 17-19, 2010, Computational and Geometric Topology, Bertinoro, Italy
  June 24-27, 2010, 16th International Conference on Applications of Computer Algebra, Vlora, Albania
  June 26-30, 2010, International Conference on Topology and its Applications, Nafpaktos, Greece
  June 28-July 2, 2010, 8th French Combinatorial Conference, Orsay, France
  June 30-July 2, 2010, 8th Gremo Workshop on Open Problems, Morschach, Switzerland
  July 7-9, 2010, Postgraduate Combinatorial Conference, London, England
  July 26-29, 2010, 1st Emléktábla Workshop, Gyöngyöstarján, Hungary
  July 26-30, 2010, Midsummer Combinatorial Workshop, Prague, Czech Republic
  August 1-7, 2010, MaMuT, Mátrafüred, Hungary
  August 2-6, 2010, Formal Power Series and Algebraic Combinatorics, San Francisco, USA
  August 2-7, 2010, A Conference in honor of the 70th birthday of Endre Szemerédi, Budapest, Hungary
  August 12-15, 2010, Recent Trends in Graph Theory and Combinatorics, Cochin, India
  August 19-27, 2010, International Congress of Mathematicians, Hyderabad, India
  September 5-10, 2010, 19th Workshop on Cycles and Colourings, Tatranská Štrba, High Tatras, Slovakia
  September 6-8, 2010, 18th European Symposium on Algorithms, Liverpool, United Kingdom
  September 10-12, 2010, The Mathematics of Vera Sós, Budapest, Hungary
  September 20-October 1, 2010, Discretization in Geometry and Dynamics, Berlin, Germany
  January 23-25, 2011, Symposium on Discrete Algorithms, San Francisco, California
  January 24-27, 2011, 2nd Emléktábla Workshop, Gyöngyöstarján, Hungary
  February 6-12, 2011, Topological and Geometric Combinatorics, Oberwolfach, Germany
  February 7-10, 2011, 9th Gremo Workshop on Open Problems, Wergenstein, Switzerland
  March 10-12, 2011, 28th Symposium on Theoretical Aspects of Computer Science, Dortmund, Germany
  March 28-30, 2011, 27th European Workshop on Computational Geometry, Morschach, Switzerland
  May 31-June 3, 2011, 7th Hungarian-Japanese Symposium on Discrete Mathematics and Its Applications, Kyoto, Japan
  June 13-17, 2011, Infinite and finite sets, Budapest, Hungary
  June 26-July 2, 2011, Algebraic Graph Theory Summer School, Rogla, Slovenia
  June 27-30, 2011, 3rd Emléktábla Workshop, Balatonalmádi, Hungary
  July 31-August 6, 2011, MaMuT, Mátrafüred, Hungary
  August 7-20, 2011, Memphis-Budapest Summer School in Combinatorics, Budapest, Hungary
  August 15-19, 2011, Topology of Manifolds Summer School, Budapest, Hungary
  August 22-26, 2011, Paul Turán Memorial Conference, Budapest, Hungary
  August 29-September 2, 2011, European Conference on Combinatorics, Graph Theory and Applications, Budapest, Hungary
  September 3-4, 2011, A Conference in honor of the 70th birthday of Gyula Katona, Budapest, Hungary
  November 7-11, 2011, Workshop on Computational Topology , Toronto, Canada
  November 7-11, 2011, Workshop on Algebraic Topology and Combinatorics, Buenos Aires, Argentina
  February 27-March 2, 2012, Bernoulli Reunion Conference on Discrete and Computational Geometry, Lausanne, Switzerland
  February 27-March 23, 2012, Extremal Combinatorics in Random Discrete Structures, Berlin, Germany
  March 19-21, 2012, 28th European Workshop on Computational Geometry, Perugia, Italy
  June 4-8, 2012, 10th Gremo's Workshop on Open Problems, Bergün, Switzerland
  June 24-29, 2012, Perspectives in Discrete Mathematics, Bellaterra, Spain
  June 24-30, 2012, Discrete Math Summer School and Sygn III, Rogla, Slovenia
  July 2-6, 2012, Applied and computational topology: ATMCS 5, Edinburgh, Scotland, United Kingdom
  July 2-7, 2012, 6th European Congress of Mathematics, Krakow, Poland
  July 9-20, 2012, CAST Summer School and Conference, Budapest, Hungary
  July 23-27, 2012, Algebraic Topology: applications and new directions Stanford Symposium 2012, Palo Alto, United States
  July 29-August 4, 2012, MaMuT, Mátrafüred, Hungary
  August 6-9, 2012, 4th Emléktábla Workshop, Tihany, Hungary
  September 3-14, 2012, ICTP-IPM Workshop and Conference in Combinatorics and Graph Theory, Trieste, Italy
  July 1-5, 2013, Erdős Centennial, Budapest, Hungary
  July 22-August 2, 2013, 1st. Combinatorial South School: Modern methods in Combinatorics, ECOS 2013, Merlo, San Luis, Argentina