Joseph Klingenstein (1891 – 1976) was an American investment banker, and the co-founder in 1927 (with Maurice Wertheim) of Wertheim & Co., an investment bank.
Klingenstein was honorary chairman of Wertheim & Co. which he co-founded in 1927.
[1] He was a long-term benefactor and president of Mount Sinai Hospital.
[1] He was married to Esther Adler, who died in 1974.
[1] They created the Esther A. and Joseph Klingenstein Fund (EAJK Fund) in 1945.