Datasets - Mannheim Linked Data Catalog

OpenCorporates - The Open Database Of The Corporate World

Open Database of corporate entities. As of 2011-04-09 has information on 7,841,828 companies from around the world. Jurisdictions covered include: 41,292 Bermuda 3,886,733...
- JSON
- example/rdf+xml

You can also access this registry using the API (see API Docs).