Anthony Quinton Keasbey was an American lawyer who served as United States Attorney for the District of New Jersey under seven presidents. In addition he authored a book on poetry called From the Hudson to the St. Johns and Home Flowers: Pressed in My Law-books. He was also a part of the writing of Marching Song of the First Arkansas, in addition he wrote a law book called Slavery in New Jersey.

The U.S. attorney for the District of New Jersey is the chief federal law enforcement officer in New Jersey. On December 16, 2021, Philip R. Sellinger was sworn in as U.S. Attorney. The U.S. District Court for the District of New Jersey has jurisdiction over all cases prosecuted by the U.S. attorney.