The implementation of a maintenance management system is very important for organizations. The Calibration laboratory has a lot of reference equipment. Based on ISO/IEC 17025: 2017, maintenance management is essential for calibration laboratories. From the results of literature studies, the issue of maintenance management has been discussed in many studies, but maintenance management in calibration laboratories has not been studied. This paper identifies the factors that affect the maintenance management performance in the Indonesia calibration laboratory and also to analyze the correlation between maintenance management performance and ISO/IEC 17025’s application through a survey of 40 calibration laboratories that for more than 10 years have implemented ISO/IEC 17025. The result shows that "human resource factors" and "information management and CMMs" significantly contribute to performance maintenance management. Maintenance management performance in Indonesia calibration laboratories does not affect the application of ISO / IEC 17025: 2017. The matrix grid shows that 47.5% of the laboratories have good maintenance practices. Calibration laboratory maintenance management practices can be categorized as “understanding” based on radar diagrams, this indicates that the implementation of maintenance is good even though the benefits have not been fully realized.