We are pleased to organize the 2019 European APT workshop. The main goal is to bring together young and experienced scientists to share current research findings in the field of atom probe tomography. This meeting is jointly organized by the GPM-Rouen and the CEA-Saclay, under the hospice of the GENESIS project. This workshop is particularly suited to foster exchange in APT and FIM communities, especially aspects not regularly covered in scientific publications. A special emphasis will be brought to the methodologies used in APT to mine data and to tackle problems which are met by research labs across the world in material science application of the technique, and more particularly (but not restricted) in the field of nuclear materials. You will also have the opportunity to establish contact with scientific groups from all around Europe and hear about their latest relevant work. We therefore put special emphasis on peer-to-peer discussions around poster presentations with recognized experts in the atom probe community. We also specially invite contributions from students (MSc., PhD).