The Office of the Registrar of Corporations is a division of the Commonwealth of the Northern Mariana Islands (CNMI) Department of Commerce, which operates under the authority of the CNMI Office of the Governor.

The Office of the Registrar of Corporation is responsible for issuing, receiving, and holding custody all certificates, papers, statements, or other records or documents pertaining to corporations and partnerships in the Commonwealth.  With the exception of sole proprietorships, all other business types are required to file annual reports with the Registrar of Corporation.