Koo Vi Kyuin, better known as V. K. Wellington Koo, was a statesman of the Republic of China. He was one of Republic of China's representatives at the Paris Peace Conference of 1919.
Wellington Koo served as an ambassador to France, Great Britain and the United States; was a participant in the founding of the League of Nations and the United Nations; and sat as a judge on the International Court of Justice in The Hague from 1957 to 1967. Between October 1926 and June 1927, while serving as Minister of Foreign Affairs, Koo briefly held the concurrent positions of acting Premier and interim President of the Republic of China. Koo was the first Chinese head of state known to use a Western name publicly.