The ECRIN Clinical Research Metadata Repository is a portal allowing users to search for studies using a variety of criteria and identify the data objects (trial registrations, results summaries, journal articles, protocols etc.) associated with them. The repository is intended to support researchers and reviewers locate available data objects of all types, from a wide variety of sources. Where the data is publicly available, links are provided to directly access the data object. For controlled data, links to information about data access are available.