Willis Hall is a historic building on the campus of Carleton College in Northfield, Minnesota, United States.

The first students started attending classes at the former American House hotel in Northfield in 1867, but the building had some serious mechanical problems.

After Strong was injured in a railroad accident and subsequently recovered from his injuries, benefactor William Carleton donated $50,000 to the college to insure its survival.

His wife, Susan Willis Carleton, donated $10,000 to help clear the construction debt of the college's the first permanent building.

[5] It was designed in the French Second Empire style by a prominent Minneapolis architecture firm, Alden and Howe.