During the past decade, co-creation and co-production have become significant buzzwords throughout society, often serving as processual means and as new solutions to complex societal challenges. Co-creation and co-production processes often involve a variety of stakeholders, and the terms indicate getting things done through democratic collaboration. This issue contains 11 papers concerning co-creation and co-production covering different areas. The focus is mainly theoretical, and the papers discuss in different ways a variety of challenges related to co-creation and co-production covering topics such as: co-creative and collaborative research practices; co-production of social- and health services; cross-institutional co-creation; co-creation of cultural experience in art institutions; and co-production in community development and city planning. It is our hope that these articles will contribute to a nuanced debate on this phenomenon. This issue will be followed up by another volume in the spring 2022 focusing more on co-creation and co-production in practice.