Principal Private Secretary to the Prime Minister of the United Kingdom

Principal Private Secretary to the Prime Minister
Royal Arms as used by His Majesty's Government
Incumbent Elizabeth Perelman since 25 October 2022
Prime Minister's Office
Reports to	Prime Minister
Nominator	Prime Minister
Appointer	Prime Minister
Formation	1757
Website	10 Downing Street

The Principal Private Secretary to the Prime Minister of the United Kingdom is a senior official in the United Kingdom Civil Service who acts as principal private secretary to the prime minister of the United Kingdom. The holder of this office is traditionally the head of the Prime Minister's Office in 10 Downing Street. In the Civil Service, the role is currently graded as director general.

The current principal private secretary is Elizabeth Perelman, who assumed the position following the appointment of Rishi Sunak as Prime Minister on 25 October 2022.