Thomas D. Croci is an American politician and naval officer from the state of New York. A Republican, Croci represented the 3rd District of the New York State Senate from 2015 through 2018. He served as Deputy Assistant Secretary of Defense for Afghanistan, Pakistan, and Central Asia in the Trump administration, from February 3, 2020 to January 19, 2021. He was elected to his first political office, town supervisor for the Town of Islip, in 2011. Croci was first elected to the State Senate in 2014.