John Dwight Willard (November 4, 1799 Lancaster, Coös County, New Hampshire – October 9, 1864 Troy, Rensselaer County, New York) was an American lawyer and politician from New York.
Afterwards he spent two years in Savannah, Georgia, to improve his failing health.
Then he studied law, was admitted to the bar in 1826, and commenced practice in Troy.
In 1831, he succeeded Orville L. Holley as editor of the Troy Sentinel.
He was an associate judge of the Rensselaer County Court from 1834 to 1840.