Leung Chun-ying, GBM, JP (Chinese: 梁振英; born 12 August 1954), also known as CY Leung, is a Hong Kong politician. He served as the third Chief Executive of Hong Kong between 2012 and 2017. Since March 2017, he has been serving as the vice-chairman of the National Committee of the Chinese People's Political Consultative Conference.

A surveyor by profession, Leung first entered the political scene when he joined the Hong Kong Basic Law Consultative Committee (HKBLCC) in 1985 and became its secretary-general in 1988. In 1999, he was appointed the convenor of the Executive Council of Hong Kong, a position he held until 2011, when he resigned to run in the 2012 Chief Executive election. Initially regarded as the underdog, Leung ran an ultimately successful campaign against front-runner Henry Tang, receiving 689 votes from the Election Committee and with the support of the Liaison Office.

The Leung administration began with a series of controversies, including the anti-Moral and National Education protests and the Hong Kong Television Network protests. In 2014, Leung's government faced widespread civil disobedience targeting the government's constitutional reform proposals; the movement gained global attention as the "Umbrella Revolution". He also embattled with the misconduct allegations in relation to his recipient of HK$ 50 million payment by UGL. Leung's tenure coincided with the rise of the localist movement and increasing calls for Hong Kong independence. In December 2016, Leung announced that he would not be seeking a second term, becoming the only Chief Executive in Hong Kong's history not to do so.