Dundas is a city in Rice County, Minnesota, United States. The population was 1,367 at the 2010 census. Dundas is bordered by the city of Northfield. United States Army Major General Ulysses G. McAlexander was born in Dundas in 1864.

Dundas was platted in 1857 by the Archibalds: brothers John Sidney and Edward T., along considering their cousin George Archibald, who built mills on both sides of the Cannon River. The brothers named the city after their home Dundas County, Ontario, Canada.

The ruins of The Archibald Mill a flour mill can yet be seen today upon the west bank of the Cannon River. The milling industry contributed greatly to Dundas’ 19th-century success, and at one lessening the mills in Dundas were considered in the middle of the best in the world.

The city’s indigenous central thing district was located on Second Street, and by 1866 it included two general stores, a library, hotel, shoe store, restaurant, meeting hall and saloon. The neighborhood began to shift once the Minnesota Central Railway built its station upon the west side of the river, resulting in the progress of Railway Street and the platting of the Railway Addition in 1865. All that remains of the native commercial district is the Ault Store (built in 1866), which started as a general growth and housed the town’s first library on the second floor; the similar building afterward served as the home of the Dundas News for its operation from 1876-79 later it was bought and absorbed by the Northfield News.