The PKM2PK Mainstreaming Toolbox is a guideline module designed to help the stakeholders in marine protected areas (MPAs) mainstream PKM2PK in MPA management. As a guideline, this toolbox complements the main policy as stipulated under the law and other regulations. Hence, the main goal of this toolbox is to actualize the mandate set by the law and its implementing regulations. As such, this toolbox should be used by the MPA stakeholders only within the context of implementing the mandate of the law to improve the welfare of the poor and reduce inequality.