Wetlands in Europe are vulnerable interconnected environments, significantly contributing to biodiversity. They are often challenged by the overlapping of different levels of spatial planning and authorities in charge of their preservation and management, by the lack of coordination and incapacity of administrative authorities to handle complex territorial dynamics. In this study, we present the methodology used to engage relevant stakeholders in wetland governance in Ljubljansko Barje Nature Park, located in the southern part of the Ljubljana Basin, Slovenia. The main focus of this chapter is the detailed explanation of the implementation of effective governance for the Ljubljansko Barje Nature Park, acting through a participatory process in which users, private and public entities are committed to mainstreaming wetlands preservation into their ordinary activities. The Wetland Contract is a document signed by different stakeholders, aiming at the active participation of stakeholders in solving a selected problem in a wetland. Its implementation and the use of selected cooperative participatory techniques assure greater coordination among stakeholders and decision-makers in order to limit and absorb conflicts among different issues, primarily between preservation issues and economic activities, but also those opposing cultural heritage valorisation to the protection of natural values.