Koontz House may refer to:
Kinter K. Koontz House, Phoenix, Arizona Koontz House, Natchez, Mississippi, listed on the NRHP and more commonly known as Green Leaves James H. and Cynthia Koontz House, Echo, Oregon, listed on the NRHP and also known as Koontz House
See also J. H. Koontz Building, Echo, Oregon, listed on the National Register of Historic Places listings in Umatilla County, Oregon