Public-Private Partnerships (PPPs) are an important form of hybrid organization that may, if properly designed and managed, generate innovative solutions to complex problems by combining different institutional logics. Using data from a comparative case study of the creation of two PPPs in the Italian healthcare sector, we draw on ideas from business model design and organizational hybridity to explore how complexity can be managed inside PPPs and how this drives the creation of value for stakeholders. We link the literature on hybrid organizations with the one on business models by looking at the organizational mechanisms and processes that are implemented in PPP project governance, assets and processes. We go on to develop a theoretical model showing how effective business model design can help to bridge different logics and create value for stakeholders in the creation and operation of PPPs.