The Flexible Statistical Modeling: past, present and future (FSM2016) workshop will take place the 15 and 16 September 2016 in the beautiful city of Ghent in Belgium. This workshop brings together international researchers in the field of flexible modeling to share their latest results. The purposes are to stimulate research in this field, identify interesting new problems and applications, and foster dialogue and future research collaborations. The program includes 3 plenary talks, 8 invited talks and 2 young researcher talks.