Katherine Chi Tai is an American attorney serving as the 19th United States Trade Representative since March 18, 2021. The daughter of Chinese (waishengren) immigrants from Taiwan, she is the first Asian American to serve in the position. A member of the Democratic Party, she previously served as the chief trade counsel for the United States House Committee on Ways and Means.

The Office of the United States Trade Representative (USTR) is an agency of the United States federal government responsible for developing and promoting American trade policy. Part of the Executive Office of the President, it is headed by the U.S. Trade Representative, a Cabinet-level position that serves as the U.S. President's primary advisor, negotiator, and spokesperson on trade matters. USTR has more than two hundred employees, with offices in Geneva, Switzerland, and Brussels, Belgium.