Oregon - Role: Building
| Hotel Josephine Annex |
| Hotel North Bend |
| Hotel Ramapo |
| Hotel Western |
| Hot Lake Resort |
| Hover, George A., House |
| Howard's Gristmill |
| Howe, C. J., Building |
| Howell, John W., House |
| Howell-Kohlhagen House |
| Hryszko Brothers Building |
| Hub Department Store Building |
| Hudelson, A.B. and Son, Building |
| Hughes, Dr. Herbert H., House |
| Hughes, Patrick, House |
| Hugo Community Baptist Church |
| Humason, Orlando, House |
| Hunter-Morelock House |
| Hyland, Olive and Ellsworth, Apartments |
| Imbrie Farm |
| Imnaha Guard Station |
| Imperial Garage |
| Imperial Hotel |
| Independence National Bank |
| Independence Prairie Ranger Station |
| Independent School |
| Indian Shaker Church and Gulick Homestead |
| Inman, Clarissa McKeyes, House |
| International Harvester Company Warehouse |
| IOOF Building |
| IOOF-Paris Fair Building |
| Ireland, Sarah E., House |
| Iron Workers' Cottage |
| Irving Street Bowman Apartments |
| Irvington Bowman Apartments |
| Irvington Tennis Club |
| Irwin, Richard S., Barn |
| Isom, Mary Frances, Cottage |
| Italian Gardeners and Ranchers Association Market Building |
| Jackson County Courthouse |
| "Jackson, C. S. ""Sam"", Log House" |
| Jacobberger, Josef, House |
| Jacobberger, Joseph, Country House |
| Jacobs-Wilson House |
| James, W. Leland, House |
| Jantzen, Carl C., Estate |
| Jantzen Knitting Mills Company Building |
| Jarman, Daniel B., House and Garden |
| J.C. Penney Building |
| Jeanne Manor Apartment Building |
| Jefferson County Courthouse |
| Jefferson Methodist Church |
| Jefferson Substation |
| Jeffrey, Oliver and Margaret, House |
| Jenkins, Belle Ainsworth, Estate |
| Jensen Investment Company Building |
| Jeppesen, Peter, House |
| Jessen-Goodrich House |
| Jewish Shelter Home |
| J. K. Gill Company Building |
| J.L. Elam Bank |
| John Day Compound, Supervisor's Warehouse |
| Johnson, C. D., House |
| Johnson, Charles E., Building |
| Johnson-Ellis House |
| Johnson Hall |
| Johnston, Andrew J. and Anna B., Farmstead |
| Jones Cash Store |
| Jones, Clarence H., House |
| Jones, Dr. Noble Wiley, House |
| Jones-Sherman House |
| Jones, Simpson E., House |
| Jorgensen, Victor H. and Marta, House |
| Journal Building |
| Julian Hotel |
| Juniper House |
| Kamm, Jacob, House |
| Kam Wah Chung Company Building |
| Kane, E. C., House |
| Keating, John A. and Hattie Mae, House |
| Keck, H.C., House-Mt. Olivet Parsonage |
| Keller, Edward H. and Bertha R., House |
| Kelly, Joseph D. and Margaret, House |
| Kelty, James M. and Paul R., House |
| Kendall, Joseph, House |
| Kennedy, John D., Elementary School |
| Kenton Hotel |
| Kern, Grace, House |
| Kerr, Albertina, Nursery |
| Kershaw, Dr. Andrew, House |
| Kienlen-Harbeck Building |
| Kiernan House |
| King, Charles, House |
| King, Isaac, House and Barn |
| King, Samuel W., House |
| Kingsley, Edward D., House |
| Kinsman, John and Elizabeth, House |
| Kirk, John W., and Thomas F., House |
| Kirkland Lookout Ground House (Guard Station) |
| Kistner, Dr. Frank B., House |
Data from United States Park Service and Wikidata
