Multi-stakeholder processes in Ketapang Regency, West Kalimantan, Indonesia, have successfully fostered collaboration in building a masterplan to prevent peatland fires in the regency's high-fire-risk peat landscape. This landscape, made up of two peatland hydrological units (PHUs), is frequently affected by fires during the dry season. The 'Masterplan for Peatland Fire Prevention' for the two PHUs was enacted as Ketapang Regent Regulation no 48/2023. As an implementation of the masterplan's strategies, an Action Plan was developed through a collaborative process. This Regency Action Plan became a reference plan for governments and other stakeholders, such as CSOs, to establish strategies or collaborate on contributing to fire prevention efforts and promoting sustainable peatland management.