Thomas Francis Cusack (February 22, 1862 – July 12, 1918) was an American clergyman of the Roman Catholic Church.

[2] His childhood was spent on the Lower East Side of Manhattan, where he attended the parochial school of St. James Parish.

According to the New York Times, Cusack played a prominent role in combating a smallpox epidemic in Yonkers.

[4] He received his episcopal consecration on April 25, 1904, from Archbishop John Murphy Farley, with Bishops Charles H. Colton and James Augustine McFaul serving as co-consecrators, in St. Patrick's Cathedral in Manhattan.

He also renovated the Cathedral of the Immaculate Conception in Albany, installing electric lighting and marble flooring.