How to Find a Hong Kong Company’s Business Registration Number
The Business Registration Number (BRN) is Hong Kong’s Unique Business Identifier, in use since 27 December 2023. Every registered business needs one, and you’ll often need it yourself to look up, quote, or verify a company.
Where a BRN appears
A company’s BRN is printed on its Business Registration Certificate, and commonly appears on invoices, contracts, and official letterheads alongside the company name.
If you don’t have a document to hand, the fastest way to find it is to search the company’s name directly — its profile page shows the BRN (or, for older records not yet resolved to one, its legacy CR Number) near the top, next to the company’s status and incorporation date.
BRN vs. CR Number
A CR Number is the legacy Companies Registry number assigned before the BRN reform. Older companies may still be identified by their CR Number until it’s resolved to a BRN in the registry’s own records — this is a data-migration state, not an error, and both numbers can be searched here.
Steps to find it here
1. Go to the search page and enter the company’s English or Chinese name (a partial name works too).
2. Open the matching result — the BRN or CR Number is shown directly under the company name on its profile.
3. If the company has changed its name, the profile’s history section shows prior names alongside the current registration number, so a name-based search still finds the right record.