New Diggings is a town in Lafayette County, Wisconsin, United States. The population was 502 at the 2010 census, up from 473 in 2000. The unincorporated communities of Etna, Lead Mine, and New Diggings are located in the town.

Lafayette County, sometimes spelled La Fayette County, is a county located in the U.S. state of Wisconsin. It was part of the Wisconsin Territory at the time of its founding. As of the 2020 census, the population was 16,611. Its county seat is Darlington. The county was named in honor of the Marquis de Lafayette, the French general who rendered assistance to the Continental Army in the American Revolutionary War. The courthouse scenes from the 2009 film Public Enemies were filmed at the Lafayette County Courthouse in Darlington.