Companies Registration Office (Ireland)

The Companies Registration Office (CRO) (Irish: An Oifig um Chlárú Cuideachtaí) registers and incorporates companies in Ireland as well as filing their annual returns.

The CRO has a number of core functions:

It also registers the names of businesses which are non-limited trading entities such as sole traders and partnerships.

It also has the Office of the Registry of Friendly Societies which registers Industrial & Provident Societies, Friendly Societies and trade unions.

...
Wikipedia