We welcome you to the 51st edition of the Local Quantum Physics workshop series, which is an international conference concerning mathematical aspects of quantum field theory (QFT). Quantum field theories on both Minkowski spacetime and on curved spacetimes are within the scope of the workshop, and there is particular emphasis on the algebraic approach to QFT. We also expect talks from neighbouring fields, such as Euclidean QFT, quantum statistical mechanics, stochastic differential equations, non-commutative geometry, quantum gravity, quantum information theory and related topics. We invite scientists working on fundamental aspects of quantum field theory to give presentations of their work (axiomatic, mathematical, constructive). Priority will be given to junior scientists. In honour of Rainer Verch and on the occasion of his 60th birthday, we also welcome you to the Rainer-Fest, a day dedicated to his life and work with presentations by his advisors, students and colleagues.