The William A. and Ida C. Johnson House is a historic residence located in Oskaloosa, Iowa, United States.

It was during his tenure that the Main Building was destroyed by fire and the college moved to its present location.

It features a wrap-around full-width porch with a gable-end entryway and a bay window on the main facade.

It is the Johnsons' association with the school in the context of the Quaker testimony in Oskaloosa that makes this house historic.

This article about a property in Mahaska County, Iowa on the National Register of Historic Places is a stub.