The George Johnson House is an historic building located near Calamus, Iowa, United States.

[1] Gjert (George) Johnson was one of the three brothers who moved to Olive Township, Clinton County, Iowa in 1853.

George and his wife Britta Christensdatter had nine children and they purchased the land on which the house and surrounding farm sits in 1861.

The family was charter members of the nearby Kvindherred Lutheran Church and donated the land for the cemetery.

The George Johnson House is a 2½-story frame dwelling built on a coursed limestone foundation with a full basement.

Its prominence is aided by its large size and its location on higher ground than the relatively flat surrounding farmland.