The goal of this half-day Workshop on Post-Quantum Cybersecurity to be held as part of the International Conference on the Design of Reliable Communication Networks (DRCN) is to provide an interdisciplinary forum to discuss academic and industrial research results in all aspects related to post-quantum cybersecurity, and in particular to the design and implementation of efficient and resilient technological solutions for reliable communication networks in the post- quantum era. The current development of quantum technologies is generating great expectations for a new era for cyber security, with new threats and new possibilities to protect communications. Thus, we especially encourage papers describing theoretical techniques or practical applications within this area, with a special focus on novel ideas. Also, this workshop is expected to enable discussions of state-of-the-art and emerging topics in areas that include (but are not limited to):