William Robert Kohorst (born February 21, 1953) is an American attorney and businessman who served as United States Ambassador to Croatia from January 2018 to 2021.

[6] Kohorst started his career as a law clerk with Judge Engel at the United States Court of Appeals for the Sixth Circuit in 1978.

Afterwards, Kohorst worked as an investment banker for what later became a Fortune 1000 company and stayed until he founding his own firm, Private placement Group for Public Storage, Inc., a U.S. real estate syndicator, in 1984.

[6][7][8] He worked as President in this position until 1990, when he bought two companies and became CEO and principal of Tiger Shark Golf, Inc. and Masquerade International, Inc. and also began serving as President of RK Holdings, Inc.[6][8][9] In 1991, Kohorst co-founded KH Financial, Inc., which later became Everest Properties, a company that purchases and operates apartment, self-storage, and retail properties.

[13][14][15] Kohorst has served as director and chairman of the San Gabriel chapter of the Young Presidents' Organization, regent of Loyola Marymount University, since 2009 trustee of La Salle College Preparatory, and president of the San Gabriel Valley Council of the Boy Scouts of America.