List of Famous people named Ong

Ong Ye Kung is a Singaporean politician. He was appointed as the Minister for Transport by Prime Minister Lee Hsien Loong. He was elected as the People's Action Party Central Executive Committee Assistant Treasurer.

Ong Seong-wu is a South Korean singer and actor. He is known for his participation in the survival reality show Produce 101 Season 2, where he finished in fifth place, and is a former member of the show's derivative boy group Wanna One. Following Wanna One's disbandment, Ong made his acting debut with cast At Eighteen (2019). Ong also established his career as a solo artist with the release of his first extended play, Layers, on March 25, 2020.

Ong Teng Cheong was a Singaporean politician and architect who was the fifth president of Singapore serving a six-year term from 1 September 1993 to 31 August 1999 after winning the 1993 Singaporean presidential election. On 8 February 2002, at the age of 66, Mr Ong died in his sleep from lymphoma in the Singapore General Hospital.

Ông Io̍k-tek was a Taiwanese scholar and early leader of the Taiwan independence movement. He is considered to be an authority on the Min Nan language family and the Taiwanese language.

Đồng Khánh, born Nguyễn Phúc Ưng Kỷ (阮福膺祺) or Nguyễn Phúc Ưng Đường (阮福膺禟), also known as Chánh Mông (正蒙), was the ninth emperor of the Nguyễn Dynasty of Vietnam. He reigned three years between 1885 and 1889. His royal temple name was Cảnh Tông (景宗).

Toghrul, also known as Wang Khan or Ong Khan was a khan of the Keraites. He was the anda of the Mongol chief Yesugei and served as an important early patron and ally to Yesugei's son Temüjin, later known as Genghis Khan. The main source on his life is The Secret History of Mongols.

Ong Poh Lim was a Malayan/Singaporean badminton player who won numerous national and international titles from the late 1940s to the early 1960s. Known for his quickness and his aggressive, unorthodox playing style, Ong won many singles and doubles titles, including the Singapore, Malaysia, All-England, French, Danish and Thomas Cup championships in the 1940s and 1950s. He also invented the backhand flick serve known as the “crocodile serve”, a tactic that had been routinely used in the modern game. Ong was a keen rival to badminton legend Wong Peng Soon.

Ong Ewe Chye is a former badminton player from Malaysia. He is the elder brother of Ong Ewe Hock.

Ong Jian Guo is a badminton player from Malaysia. Ong was selected to join the Malacca team in 2001, and two years later he moved to Kuala Lumpur to be educated at the Bukit Jalil Sports School. He was the bronze medalist at the 2007 World Junior Championships in the boys' doubles event, and helped the Malaysia men's team won the silver medal at the 2011 Southeast Asian Games in Jakarta, Indonesia. Ong had a relationships with the Olympic silver medalist Goh Liu Ying since they were 19 years old, but in 2017, they ended their relationship.

Ong Yew Sin is a Malaysian badminton player.