Fernando Chui Sai-on GCM GML (Chinese: 崔世安; Jyutping: Ceoi1 Sai3 On1; born 13 January 1957) is a Macau politician who served as the 2nd Chief Executive of Macau from 2009 to 2019. He served as Secretary for Social and Cultural Affairs from 1999 to 2009. Chui was born in 1957 to local construction tycoon and , the second son after Chui Sai-cheong. His wife is a niece of the late Hong Kong tycoon Henry Fok Ying-tung.