This study aims to analyze the risks in the administrative document archiving process at UPTD Metrologi Legal Kota Surabaya using a risk matrix approach based on ISO 31000:2018. The research focuses on the management of inactive archives for the 2015–2020 period, particularly SKHP and BAP documents that are still stored physically. This study used a descriptive approach with risk assessment methods through observation, documentation studies, and questionnaires distributed to archive management officers. Risk analysis was conducted by assessing likelihood and impact using a 5×5 risk matrix. The results identified six potential risks in the archiving process, namely data input errors, discrepancies between physical documents and system data, delays in crosschecking processes, potential loss of physical documents, unsystematic document arrangement, and irregular archiving workflows. The analysis results showed that discrepancies between physical documents and system data, potential loss of physical documents, and irregular archiving workflows were categorized as high risks due to their relatively high likelihood and impact values. Meanwhile, the other three risks were categorized as moderate risks. Risk treatment recommendations include conducting periodic data verification and crosschecking, organizing structured archiving workflows, arranging archives systematically, and improving document storage systems. The implementation of risk management based on ISO 31000:2018 is expected to improve the effectiveness, accuracy, and efficiency of inactive archive management in administrative processes.