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.

During World War II he negotiated unsuccessfully with the Japanese not to expand military conflict.

[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 and started moving the gold reserve to Taiwan from China to keep it away from the advancing communists.

He was COO of Central, Farmer and Communication Banks, In 1954 he was appointed as Governor of Taiwan Province.