crn meaning is short form of Company Registration Number. It is an exclusive number which is given to an organization when it is incorporated by a national registrar like companies house in the UK. This is an important id that is used to trace and confirm legal status of a company. It appears in formal records and has to be presented in corporate documents, on an invoice, or a business letter. The CRN is still consistent even when its business changes its name or address hence a dependable method to verify the authenticity of a business.