  This volume contains the proceedings of the 17th International Conference on
Quantum Physics and Logic (QPL 2020), which was held June 2-6, 2020. Quantum
Physics and Logic is an annual conference that brings together researchers
working on mathematical foundations of quantum physics, quantum computing, and
related areas, with a focus on structural perspectives and the use of logical
tools, ordered algebraic and category-theoretic structures, formal languages,
semantical methods, and other computer science techniques applied to the study
of physical behavior in general. Work that applies structures and methods
inspired by quantum theory to other fields (including computer science) is also
welcome.
