The GAMM Activity Group on Uncertainty Quantification organizes an outreach workshop "Frontiers of Uncertainty Quantification in Engineering (FrontUQ)" on 6-8 September 2017 in Munich, Germany. This workshop brings together mathematicians and engineers working in Uncertainty Quantification. The goal is to create a forum for academic and industrial researchers working on theoretical and practical aspects of uncertainty quantification and its application to different engineering fields, e.g. civil, mechanical, aerospace engineering and material science. The workshop will have the following focus areas: Rare events and reliability, Inverse problems and Bayesian analysis, and Optimization under uncertainties.