Over the last two decades, heavy-ion collision experiments have provided overwhelming evidence that quarks and gluons, the elementary particles within protons and neutrons, can flow as a viscous relativistic liquid over distance scales not much larger than the size of a proton. Concurrently, formal theoretical developments have been pushing the limits of hydrodynamics, providing new perspectives on old problems. The program will bring together scientists who work on both formal and applied aspects of relativistic dissipative hydrodynamics, with the goal of forming a lasting dialogue where formal developments inform phenomenology and vice versa. The topics that the program will aim to advance include: