Yu Hung-chun (Chinese: 俞鴻鈞; pinyin: Yú Hóngjūn; 4 January 1898 – 1 June 1960), also known as O. K. Yui, was a Chinese political figure who served as mayor of Shanghai, chairman of the Taiwan Provincial Government and Premier of the Republic of China. He graduated from Saint Johns University in Shanghai majored in English Literature. He later appointed as Mayor of Shanghai. During World War II he negotiated with then Japanese not to expand military conflict uncessfully. When the ROC government moved to Chungking he was appointed as Director of Central Trust, Deputy minister of Friegn Affairs, and late became Minster of Department of Treasury. Yu replaced H.H. Kung as minister of finance in November 1944, following H.H. Kung's removal for corruption.^{[1]: 73–76} Immediately before he replaced Kung, Yu served as vice minister of finance.^{[1]: 75–76} Later he was appointed as Central Bank started moving gold reserve to Taiwan from China to keep them away from the advance communists. He was COO of Central, Farmer and Communication Banks, In 1954 he was appointed as Governor of Taiwan Province. Then he was in charge of Executive Yuan from 1954-1958. Yu offered to resign when an Anti-American demonstration at US Embassy went out of control. Later he refused to appeal at court resigned and went back to Central Bank as executive. In 1960 he died of asthma attck passed away at age 62.

• 23 March 1937 – the Executive Yuan resolved that Yu Hung-chun may act as mayor of Shanghai.
• 27 July 1937 – the Nationalist Government appointed Yu Hung-chun as mayor of Shanghai.
• 30 June 1958 – resigned as the president of the Executive Yuan.(Premier of the Republic of China)
• 1958 -Appointed as President of Central Bank.