Thomas Hennessy (born June 11, 1994) is an American professional football long snapper for the New York Jets of the National Football League (NFL). He played college football at Duke.
After going undrafted, Hennessy signed with the Indianapolis Colts on May 4, 2017.
On August 28, 2017, Hennessy was traded to the New York Jets for safety Ronald Martin.
On October 5, 2019, Hennessy signed a four-year contract extension with the Jets.
On April 28, 2023, Hennessy signed a four-year contract extension with the Jets.