Summary Constraint Programming and Optimization is a field within Computer Science that provides the technology for solving constrained optimization problems that arise in many industrial settings. They help industry to make better business decisions, generate value from data, and achieve a more sustainable use of resources. Examples of applications are automated scheduling, logistics, and energy production planning. The Nordic Constraint Network Workshop is a yearly event that gathers researchers and industrial practitioners from the Nordic countries to disseminate results about ongoing research, share knowledge about existing projects and foster further development of the network. In 2023, the event will take place for the first time in Denmark, in the city of Odense.