International Association of Corporation Administrators- IACA
Professional association for government administrators of business entity and secured transaction record systems in their jurisdiction. Overview, sections, links to the offices of US and some international members.

Irish Companies Registration Office
Authority for incorporation of companies and the registration of business names in Ireland. Downloadable forms, legislation, price list, FAQs, and more in the "Doing business with us" section.

Swiss Federal Commercial Registry Office
Maintaining the Zefix database providing a central business names index of all entities engaging in business in Switzerland, with links to the cantonal registries for further details as well as the Swiss Commercial Gazette (SHAB) publishing updates and changes (in PDF).

Company Registration around the World
Directory of registries, other registration authorities, and related databases.

New Zealand Companies Office
Official government register for companies in New Zealand. Database with information on companies, directors, and security interests registered on motor vehicles, including filed documents. Free access to registry includes companies' name, status, and registered office.

Companies House UK
The official UK government register of UK companies.