Certification is a determination given by a professional organization to a person to show that a person has competence, able to do a specific job or task. The management of certificates at PT Markco International is still carried out in a simple manner using Microsoft Office applications, starting from managing personal data, passing person status, numbering and issuing certificates. The design of this Certificate Management Information System is intended to provide a better solution, namely a web-based information system that can convert the currently running manual system into a computerized system using a database. Waterfall software development method and data collection techniques by conducting observations and literature studies are applied in the development of this program. This design discusses the process of managing personal data, registration agencies and certificates. As a result, the certificate management program that has been created can manage related information such as data on persons, agencies, certificate categories, registrations and certificates. This proves that the Certificate Management Information System Design at PT Markco International can manage the certificate management process well
