Thomas Davis Klingenstein (born 1954) is an American hedge fund manager, a leading donor to the US Republican Party, and chairman of the board of trustees of the Claremont Institute, a conservative think tank, since 2010.
[4] Klingenstein is a partner in Cohen Klingenstein, a Wall Street hedge fund investment firm that administers a portfolio worth more than US$2.3 billion, as of 2023.
[6] Klingenstein has donated more than $10 million in the 2024 election cycle.
[7] On 6 July 1986, Klingenstein married Nancy Deborah Perlman, daughter of Mr. and Mrs. Nathan Perlman of Tucson, Arizona, in Greenwich, Connecticut.
[2] Klingenstein is now married to Robin D. Weaver, a lawyer, and they live in New York.