Recently, many organizations have attempted to build hypermedia systems to expand their working areas into Internet-based virtual work places. Increasingly, it becomes more important than ever to manage organizational hypermedia documents (OHDs); metadata plays a critical role for managing these documents. This chapter redefines metadata roles and proposes a metadata classification and the corresponding metadata schema for OHDs. Furthermore, a meta-information system, HyDoMiS (Hyperdocument Meta-information System) built on the basis of this schema is proposed. HyDoMiS performs three functions: metadata management, search, and reporting. The metadata management function is concerned with workflow, documents, and databases. The system is more likely to help implement and maintain hypermedia information systems effectively.