High Court District Court Magistrates' Court Special courts and tribunals: Chief Executive Elections Legislative elections District council elections Consular missions in Hong Kong Hong Kong–China relations Hong Kong–Taiwan relations The Registration and Electoral Office (REO) (Chinese: 選舉事務處)[1] is a department under the jurisdiction of the Constitutional and Mainland Affairs Bureau (CMAB) of the Hong Kong Government.

[2] It is also an administrative support organisation of the Electoral Affairs Commission (EAC), which assists the implementation of the statutory rights under the Electoral Affairs Commission Ordinance.

The REO is headed by the Chief Electoral Officer (CEO), who is assisted by the Principal Electoral Officers (PEO) and the Chief Systems Manager (CSM).

The head office is at the Treasury Building in Cheung Sha Wan, with several other divisions at the Millennium City in Kwun Tong and Kowloonbay International Trade & Exhibition Centre in Kowloon Bay.

[5] This article about the three branches of government in Hong Kong is a stub.