Gregorville is an unincorporated community in the town of Lincoln, Kewaunee County, Wisconsin, United States. It sits at the junction of County Highways P and S, 5.5 miles (8.9 km) west of Algoma. The community was most likely named for Frank Gregor, a Bohemian-born farmer who was Wisconsin's next-to-last surviving Civil War veteran when he died in 1937. The post office was established in 1899, with Wenzel Zlab as the first postmaster.