Jacob Radcliff or Radclift (April 20, 1764 – May 6, 1844) was a jurist, lawyer and politician.

He resigned from the bench in 1804, and practiced chancery law in Brooklyn.

When the Federalist Party gained the majority in 1810, Radcliff was appointed mayor of New York City.

When the War of 1812 divided the Federalist party, Radcliff aligned with the Tammany Society, which was poised to gain a majority in state politics.

Grand Sachem of Tammany Hall John Ferguson became mayor in 1815 but resigned to take the appointment of Surveyor of the Port of New York.