The Chief Secretary for Administration, commonly known as the Chief Secretary of Hong Kong, is the most senior principal official of the Government of the Hong Kong Special Administrative Region. The Chief Secretary is head of the Government Secretariat which oversees the administration of the Region to which all other ministers belong, and is accountable for his or her policies and actions to the Chief Executive and to the Legislative Council. Under Article 53 of the Basic Law, the position is known as "Administrative Secretary". As the second highest ranking public official in Hong Kong, the Chief Secretary acts as Acting Chief Executive when the Chief Executive is absent.

Henry Tang Ying-yen is a Hong Kong politician who served as the Chief Secretary of Hong Kong between 2007 and 2011. He held the position of Financial Secretary from 2003 to 2007. In 2012, he lost the Hong Kong Chief Executive Election to Leung Chun-ying.