This study integrated four management systems in the body certification, such as Product certification, Quality Management System certification, Environmental Management System certification, and Food Safety Management System certification to be one conceptual model (Integrated Management System). We implemented it in one of the certification bodies in Indonesia, the Institute for Industrial Certification, Ministry of Industry, and created a new model implementation and business process model using BPMN. The conceptual model and the implementation model are well verified and validated where the results are better than the separate management system and current management system