The 17th International Workshop on H-mode Physics and Transport Barriers will take place from 9 to 11 October, 2019 in Shanghai, China. The workshop will be organized around six broad topics of current interest. An overview talk, accompanied by discussion, will be presented for each topic. Each talk will be followed by a poster session of contributed papers, related to the topic.To achieve the purpose of the workshop, the International Advisory Committee solicits contributed papers that present and discuss recent experimental, theoretical or modeling studies of transport barriers, both internal and edge, as observed in numerous magnetic confinement machines and in a variety of magnetic topologies.