Tun Omar Ong Yoke Lin (Chinese: 翁毓麟; 23 July 1917 – 1 July 2010) was a Malaysian politician, diplomat and businessman. He was a founding member of the Malaysian Chinese Association, and was a key figure in the country's road to independence. Ong served various positions in the government of Malaya and Malaysia, as a Cabinet minister and ambassador. He was a Chinese Muslim convert.