Onn Jaafar | |
|---|---|
| عون جعفر | |
 Onn Jaafar, 1948. | |
| 7th Menteri Besar of Johor | |
| In office 1 June 1947 – 18 May 1950 | |
| Preceded by | Ungku Abdul Aziz Abdul Majid |
| Succeeded by | Syed Abdul Kadir Mohamed |
| 1st President of the United Malays National Organisation | |
| In office 11 May 1946 – 25 August 1951 | |
| Preceded by | Position established |
| Succeeded by | Tunku Abdul Rahman |
| Member of the Malayan Parliament for Kuala Terengganu Selatan | |
| In office 11 September 1959 – 19 January 1962 | |
| Preceded by | Constituency established |
| Succeeded by | Ismail Kassim |
| Personal details | |
| Born | Onn bin Jaafar 12 February 1895 Bukit Gambir, Johor Bahru, Johor |
| Died | 19 January 1962 (aged 66) Johor Bahru, Johor, Federation of Malaya (now Malaysia) |
| Resting place | Mahmoodiah Royal Mausoleum |
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| Children | Hussein Onn |
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Dato' Sir Onn bin Dato' Jaafar (Jawi: عون بن جعفر; 12 February 1895 – 19 January 1962) was a Malayan politician who served as the 7th Menteri Besar of Johor from 1947 to 1950. His organised opposition towards the creation of the Malayan Union (by the returning British colonial power after the end of the Japanese occupation of Malaya) led him to form the United Malays National Organisation (UMNO) in 1946; he was UMNO's founder and its first president until his resignation in 1951. He was famously known as the pioneer of organised anti-imperialism and early Malay nationalism within Malaya, which eventually culminated with the Malayan independence from Britain. He was also responsible for the social and economic welfare of the Malays by setting up the Rural Industrial Development Authority (RIDA).
His son Hussein Onn was the third Prime Minister of Malaysia, his grandson, Hishammuddin Hussein is a senior UMNO politician, and his great-grandson Onn Hafiz Ghazi is the current Member of the Johor State Legislative Assembly for Layang-Layang and 19th Menteri Besar of Johor.