Joseph Nestor[2] Mondello (February 13, 1938 – August 1, 2022) was an American politician and diplomat who served as the United States Ambassador to Trinidad and Tobago from 2018 to 2021.

Prior to being elected state chairman, he served as the head of the Nassau County Republican Committee for twenty three years.

He was a past Town supervisor of Hempstead, New York, as well as an attorney, college professor, high school teacher, and probation officer.

Upon graduating high school, Mondello entered the Air National Guard as an airman from 1955 to 1956, and transferred to the United States Army as Corporal in the infantry from 1956 to 1958.

[1] Mondello then served in a host of legal positions, including counsel to the New York State Legislature, and an Assistant District Attorney in the Complaint, Felony, and Trial Bureaus.