The Center for Free-Electron Laser Science (CFEL) at DESY in Hamburg, Germany will be hosting the Ultrafast X-ray Summer School 2019 (UXSS 2019). UXSS 2019 is jointly organized by CFEL and the PULSE institute at SLAC National Accelerator Laboratory. The summer school program will be highly interdisciplinary, with topics ranging from accelerator physics to molecular biology, and is intended to give doctoral students and postdoctoral researchers the opportunity to familiarize themselves with the latest developments and opportunities in ultrafast X-ray science.