Tan Sri Syed Jaafar bin Syed Hassan Albar (Arabic: ??? ???? ?? ??? ?????? Sayyid Ja'far bin ?asan al-bar; born
August 21, 1914
–14 January 1977) was a Malaysian politician.
His staunch defence of his political party, the United Malays National Organisation (UMNO) – which leads the governing Barisan Nasional coalition – led to him being given the moniker "Lion of UMNO".
He was also known for his radical views on Malay sovereignty over Malaysia, and Malay supremacy in politics, and is of Hadhrami Arab descent.
He was born in Celebes, Dutch East Indies (now Indonesia) and migrated when he was 14 years old to Singapore (then part of British Malaya).
He served as the Secretary-General of UMNO during the early 1960s, but resigned after Singapore was allowed to secede from Malaysia.