Dennis Smelt (November 23, 1763 – October 22, 1818) was a doctor and United States Representative from Georgia. He was born to the Reverend John Smelt, an Oxford-educated Episcopal clergyman, in Essex County, Virginia. Smelt attended William and Mary College before travelling to England for three years to study medicine. He returned to America, settling in Augusta, Georgia, in 1789. He married Mary Cooper, the third of five daughters of merchant Annanias Cooper, in 1798.