Arkansas - Criteria: C (architecture/engineering)
| Immaculate Heart of Mary Church |
| Immaculate Heart of Mary School |
| Interstate Orphanage |
| Iron Springs Dam |
| Iron Springs Shelter No. 1 |
| Iron Springs Shelter No. 2 |
| Izard County Courthouse |
| Jack Creek Bathhouse |
| Jackson County Courthouse |
| Jackson, Floyd, House |
| Jackson-Herget House |
| Jackson House |
| Jackson House |
| Jack Tar Hotel and Bathhouse |
| James, Dr., House |
| James House |
| Jameson-Richards Cafe |
| Jameson-Richards Gas Station |
| James, Randolph, House |
| Jasper Commercial Historic District |
| Jefferies Building |
| Jefferies-Craptree House |
| Jeffery, A. C., Farmstead |
| Jeffery, Miles, Barn |
| Jeffries House |
| Jerome Elementary School No. 22 |
| Jess Norman Post 166 American Legion Hut |
| Joclin-Bradley-Bowling House |
| Joers, Peter Dierks, House |
| Johnson Barn |
| Johnson County Courthouse |
| Johnson County Line-Ozark-Crawford County Line Road, Altus Segment |
| Johnson House |
| Johnson House |
| Johnson House |
| Johnson House |
| Johnson House and Mill |
| Johnson-Portis House |
| Johnson Switch Building |
| Johnson, William Jasper, House |
| Johnston, John H., Cotton Gin Historic District |
| Johnswood |
| Joiner House |
| Jonesboro, Lake City & Eastern Railroad Depot |
| Jones, E. Fay and Gus, House |
| Jones General Store and Esso Station |
| Jones House |
| Jones, Mark P., House |
| Jones Memorial Methodist Church |
| Jones School |
| Joplin, Peter, Commercial Block |
| Judd Hill Cotton Gin |
| Judsonia Bridge |
| Judsonia Community Building Historic District |
| Juhre, Charles, House |
| Jumbo Church of Christ |
| Kahn-Jennings House |
| Kansas City, Fort Scott and Memphis Railroad Depot |
| Kansas City-Southern Depot-Decatur |
| Kansas City Southern Railway Caboose #383 |
| Kansas City Southern Railway Locomotive #73D and Caboose #385 |
| Katzenstein House |
| Kays, Victor Cicero, House |
| Keesee House |
| Kefauver House |
| Keiser School |
| Keiser Water Tower |
| Keith House |
| Kelly, C. D., House |
| Kemp Cotton Gin Historic District |
| Kennedy, Dr. Charles H., House |
| Keo Commercial Historic District |
| Kerr-Booth House |
| Kimball House |
| Kimbrough, S. A., House |
| Kindley House |
| King, David L., House |
| King, Hugh L., House |
| King-Neimeyer-Mathis House |
| King Schoolhouse |
| King-Whatley Building |
| Kirksey, Loy, House |
| Kitchens, Richard L., Post No. 41 |
| Kittrell House |
| Kleiber House |
| Klein, George, Tourist Court Historic District |
| Kleinschmidt, Gustave B., House |
| Klotz, Henry, Sr., House |
| Klotz, Henry W., Sr., Service Station |
| Knight, Ed, House |
| Knob School-Masonic Lodge |
| Knoop, Werner, House |
| Knox, R. M., House |
| Kocourek and Son Hardware |
| Koen, Henry R., Forest Service Building |
| Koon House #1 |
| Koon House #2 |
| Koon House #3 |
| Koon House #4 |
| Koon House #6 |
Data from United States Park Service and Wikidata
