The workshop is part of the 2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2015) that will be held in Hamburg, Germany, during September 28 – October 03, 2015 This workshop will address unconventional computing for Bayesian inference, with keynote speakers on Bayesian inference for autonomous robots, and insights form computational biology, as well as presentations of submitted works, aiming to encourage these Bayesian and unconventional computing approaches to the IROS community