http://www.brunswik.org/
The Brunswik Society

http://www.smdm.org/

The Society for Medical Decision Making

http://www.sjdm.org/

The Society for Judgment and Decision Making

http://www2.fmg.uva.nl/eadm/home.html

The European Association for Decision Making

http://www.terry.uga.edu/mcdm/
International Society on Multiple Criteria Decision Making

http://decision-analysis.society.informs.org/

The Decision Analysis Society, a subdivision of INFORMS, the Institute for Operations Research and the Management Sciences

http://www.sra.org/

The Society for Risk Analysis

http://psych.fullerton.edu/mbirnbaum/bayes/

Edwards Bayesian Research Conference