Conferences in 2006 and future ones which I am involved in the organization are:

• CP2006: Twelfth International Conference on Principles and Practice of Constraint Programming, 24-29 September, Nantes, France.
• CP-TOOLS-06: First International Day on Constraint Programming Tools, 24 September, in conjunction with CP2006.
• CPAI'06: Third International Workshop on Constraint Propagation and Implementation, 25 September, in conjunction with CP2006.
• ICLP 2006: Twenty Second International Conference on Logic Programming, 17-20 August, Seattle, USA, 2006. (part of the Fourth Federated Logic Conference, FLoC 2006)
• PRICAI 2006: Ninth Pacific Rim International Conference on Artificial Intelligence, 7-11 August, Guilin, China, 2006.
• PPDP'06: Eighth ACM-SIGPLAN International Symposium on Principles and Practice of Declarative Programming, 10-12 July, Venice, 2006.
• PADL 06: Eighth International Symposium on Practical Aspects of Declarative Languages, January 9-10, Charleston, South Carolina, 2006. (co-located with POPL 2006: ACM's Principles of Programming Languages)

Some past conferences which I have involvement are:

• CP 2005: Eleventh International Conference on Principles and Practice of Constraint Programming, October 1 - 5, Sitges, Spain.
• CPAI 2005: Second International Workshop on Constraint Propagation and Implementation, in conjuction with CP 2005, October 1, Sitges, Spain.
• IJCAI-05: Nineteenth International Joint Conference on Artificial Intelligence, 30 July - 5 August, Edinburgh, Scotland.
• SAC-05: Constraint Solving and Programming Track at the 20th Annual ACM Symposium on Applied Computing, March 13 -17, Santa Fe, New Mexico.
• CP-2004: 10th International Conference on Principles and Practice of Constraint Programming, September 27 - October 1, Toronto, Canada.
• PRICAI-2004: The 8th Pacific Rim International Conference on Artificial Intelligence, 9th - 13th August, Auckland, New Zealand.
• APSEC2003: 10th Asia-Pacific Software Engineering Conference, 10-12 December, Chiangmai, Thailand.
• CP-2003: 9th International Conference on Principles and Practice of Constraint Programming, 29 September - 3 October, Cork, Ireland.
• APSEC2001: 8th Asia-Pacific Software Engineering Conference, Dec 4-7, 2001, Macau.
• PRICAI-02: The 7th Pacific Rim International Conference on Artificial Intelligence, Aug 18-22, Tokyo, Japan.
• CP-2001: 7th International Conference on Principles and Practice of Constraint Programming, Nov 26 - Dec 1, 2001, Paphos, Cyprus. CP-2001 will be held also in conjunction with ICLP-2001: The 17th International Conference on Logic Programming.
• APSEC2001: 8th Asia-Pacific Software Engineering Conference, Dec 4-7, 2001, Macau.
• CP2000: 6th International Conference on Principles and Practice of Constraint Programming, Singapore, September 18-22, 2000.
• ASIAN'99: Asian Computing Science Conference, Phuket, Thailand, December 10-12, 1999.
• CP'99: Post-conference Workshop on Large Scale Combinatorial Optimisation and Constraints, Alexandra, Virginia, USA, October 16, 1999.
• CP'98: Fourth International Conference on Principles and Practice of Constraint Programming, Pisa, Italy, October 26 - 30, 1998.
  A link to the individual CP'98 workshops is here
• ASIAN'98: Asian Computing Science Conference, Manila, The Philippines, December 8-10, 1998. The conference registration site is here.