Office of the Chief Executive, Government building in Tamar, Hong Kong, China

The Office of the Chief Executive is an office building at 1 Tim Wa Avenue in Admiralty, on the northern shore of Hong Kong Island. It is one of three buildings in the Tamar Development Project, with the Legislative Council Complex to its east and the Central Government Complex to its south. The open space between the three buildings is Tamar Park.

The Office of the Chief Executive began operating at 1 Tim Wa Avenue on 8 August 2011. Before that, the Chief Executive's office was housed in Government House in Central. The new building is one of three structures in the Tamar Development Project, alongside the Legislative Council Complex and the Central Government Complex.

The building opened on 8 August 2011, when the Chief Executive's office moved out of Government House in Central. It stands at 1 Tim Wa Avenue as one of three structures of the Tamar Development Project, with the Legislative Council Complex to its east and the Central Government Complex to its south; the open ground between them became Tamar Park. Days after opening, in August 2011, three reporters who walked over from the new LegCo building were briefly arrested on suspicion of attempted burglary before being released, an episode legislators criticised.

The building is located in a modern administrative district with good public transportation connections and is surrounded by walkways and other office buildings. Visitors should note that access to certain areas may be restricted and security checks are standard practice.

The building was designed with advanced security and communication systems to meet the demands of a government headquarters. Its architecture balances contemporary design elements with the functional requirements of running a major administration.