John Breckinridge (December 2, 1760 – December 14, 1806) was a lawyer and politician from the U.S. state of Virginia. He served in the state legislatures of Virginia and Kentucky before being elected to the U.S. Senate and appointed United States Attorney General during the second term of President Thomas Jefferson. He is the progenitor of Kentucky's Breckinridge political family and the namesake of Breckinridge County, Kentucky.