Tan Sri Datuk Amar Ong Kee Hui (1914–2000) was a Malaysian Chinese politician and founder / leader of the Sarawak United People's Party (founded 12 June 1959).
He was bestowed the titles "Datuk" later upgraded to "Dato Sri" (PNBS) and "Datuk Amar" (DA) by the Sarawak State Government, "Datuk" (PGBK) by the Sabah State Government and "Tan Sri" (PMN) by the Government of Malaysia.
Born in 1914 in Kuching, Ong Kee Hui was educated at St. Thomas's School in Kuching and later St. Andrew's School in Singapore before receiving his diploma in Agricultural Science from Serdang College and entered Sarawak Government civil service in 1935. Leaving government service in 1946, Ong entered business under the tutelage of Wee Kheng Chiang, his father-in-law, who appointed him manager of the family’s Bian Chiang Bank.
He was also Mayor of Kuching, Minister of Technology, Research and Local Government, Minister of Local Government and Housing and Minister of Science Technology & Environment in the Malaysian Cabinet from 1971 to 1981.
His father, Ong Kwan Hin (1896–1982), was Kapitan China for the Hokkien community whilst his grandfather, Ong Tiang Swee (1864–1950) was also Kapitan China, President of the Chinese Chamber of Commerce, and one of the first two Chinese nominated to the Sarawak Council Negri (Legislative Council) in 1937.
On 14 September 1937, he married Wee Bee Siok, the daughter of a successful banker and businessman, Wee Kheng Chiang in a traditional Chinese ceremony. They have 8 children - 2 sons and 6 daughters.