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.

[3] 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.

[5] Croci graduated from Connetquot High School and received a bachelor's degree from James Madison University in Harrisonburg, Virginia where he earned a Bachelor of Science degree in Political Science.

[6] Croci abruptly left the state Senate to rejoin the U.S. Navy in May 2018 without resigning his seat.