Quantum theory and general relativity have passed numerous experimental tests, but the interface of these theories is still largely unexplored – both from an experimental and a theoretical point of view. As a consequence, researchers working on aspects of gravitational quantum physics, such as matter-wave gravimetry and gradiometry, quantum-optical gravimetry, and gravitationally mediated entanglement, use different frameworks to describe the influence of gravity on quantum systems. The aim of this workshop is to bring together researchers from these groups to help find coherent descriptions of gravity in quantum interference, as well as to foster an exchange of experimental approaches and theoretical ideas for future experiments in this field.