Afton is a city in Washington County, Minnesota, United States. The population was 2,886 at the 2010 United States Census. It lies upon a small bay where Valley Creek empties into the St. Croix River, several miles north of its confluence later than the Mississippi River.

Afton is well known for Afton Alps, the largest ski and snowboard area in the Twin Cities metropolitan area. It is house to Afton State Park on the St. Croix River. Due to these two destinations and its quaint small-town reveal in a major metropolitan area, Afton receives a fair amount of local tourism in the form of daylight trips. The 2018 US Winter Olympic Gold Medalist cross-country skier Jessie Diggins is from Afton.

The first settlers in the Place arrived in 1837. The unity of Afton was platted in 1855, with the name prearranged from a poem (Sweet Afton) by Robert Burns. A say office has been in operation at Afton in the past 1857. The city contains three properties listed upon the National Register of Historic Places: the 1856 Erastus Bolles House, the 1864 Newington Gilbert House, and the 1867 Cushing Hotel.

The city has a total Place of 26.42 square miles (68.43 km); 25.05 square miles (64.88 km²) is house and 1.37 square miles (3.55 km) is water. Main routes increase Hudson Road, County Roads 18, 21, and 71; and Minnesota Highway 95. Afton borders Lake St. Croix Beach, Lakeland, and St. Mary’s Point to the east. It then borders West Lakeland Township to the north, Denmark Township to the south, and Woodbury to the west.