Ms Ada Chung served as the Registrar of Companies for Hong Kong from  2007 until 2020.  Ms Chung took up the role of the privacy commissioner  for Hong Kong in September 2020.

In her role on the CRF Executive Committee Ms Chung served as the CRF  Treasurer for thirteen years.  Ms Chung hosted the 2017 CRF Annual  Conference.

Ms Chung is a barrister-at-law and a Certified Public Accountant.   She was appointed as the Registrar of Companies of Hong Kong in August  2007 and in the role was heavily involved in the rewrite of the  Companies Ordinance, the implementation of the new Companies Ordinance  and the introduction of electronic company incorporation and electronic  filing of company information in Hong Kong.

As a representative of the Financial Secretary, Ms Chung is an  ex-officio council member of the Hong Kong Institute of Certified Public  Accountants.  She also sat on the Financial Reporting Council.  Before  her appointment as the Registrar, she was a Deputy Law Officer and  headed the Civil Litigation Unit of the Civil Division of the Department  of Justice.