Constantine Sidamon-Estiroff (June 28, 1930 – December 26, 2011) was an American born Georgian aristocrat and the New York City highway commisoner in the late nineteen sixties and early nineteen seventies in the administration of John V. Lindsay.
Constantine was born in New York City, New York into the house of Sidamon-Eristavi, claiming descent from the medieval kings of Alania. He was the son of Prince Simon Sidamon-Eristoff, a Georgian military officer, who emigrated to the United States after the Bolsheviks invaded Georgia in 1921 and Anne Tracy, a descendant of John Bigelow, an American diplomat in the mid-19th century. In 1957 he married Anne Phipps Sidamon-Eristoff, a granddaughter of Andrew Carnegie's partner Henry Phipps.
Sidamon-Estiroff served as the New York City Highway commissioner in the administration of Mayor John V. Lindsay. Beginning with his appointment by Governor Malcolm Wilson of New York in 1974 until 1989 he then served as a member of the Metropolitan Transit Authority. Then from 1989 until 1993 under President George H.W Bush he served as the director of the New York Region #2 (encompassing New York, New Jersey, Puerto Rico and the United States Virgin Islands) of the United States Environmental Protection Agency. Sidamon Eristoff died on December 26, 2011 in New York City at the age of 81. His son Andrew Eristoff is the current New Jersey State Treasurer.
- -New York Times Obituary-