Grade I historic buildings in Hong Kong are those selected as those "outstanding merits of which every effort should be made to preserve if possible". These buildings may be protected under the Antiquities and Monuments Ordinance; after consulting the Antiquities Advisory Board, with the approval of the Chief Executive and the publication of the notice in government gazette, the Antiquities Authority may legally declare the Graded historic buildings to be protected as Declared Monuments. Five Grade I historic buildings have been demolished in the last two decades. Note: This list is accurate A territory-wide grade reassessment has been ongoing since. See this link for the latest grading update.

Central and Western District

Eastern District

Islands District

Kowloon City District

Kwun Tong District

North District

Sai Kung District

Sha Tin District

Sham Shui Po District

Southern District

Tai Po District

Tsuen Wan District

Tuen Mun District

Wan Chai District

Wong Tai Sin District

Yau Tsim Mong District

Yuen Long District