Oklahoma - Role: Building
| Harbour-Longmire Building |
| Harding Junior High School |
| Hardy Murphy Coliseum |
| Hargis-Mitchell-Cochran House |
| Harmon County Courthouse |
| Harmony School |
| Harn House |
| Harper County Courthouse |
| Harris House |
| Harrison School |
| Harris Palace Store |
| Harwelden |
| Haskell County Courthouse |
| Haskell State School of Agriculture |
| Hatashita, Henry C., House |
| Hayes-Kennedy-Rivoli Theater Building |
| Haywood Building |
| Haywood, Dr. William L. and Susie Price, Estate |
| Healdton Armory |
| Healdton Oil Field Bunk House |
| Hedlund Motor Company Building |
| Heierding Building |
| Henry, Hugh, House |
| Hewgley Terrace |
| Hightower Building |
| Hildebrand Mill |
| Hines Round Barn |
| Hobart City Hall |
| Hobart Public Library |
| Hobart Rock Island Depot |
| Hogue House |
| Hoke Building |
| Hokey's Drugstore |
| Holdenville Armory |
| Holdenville City Hall |
| Hollis City Hall and Jail |
| Holy Family Cathedral, Rectory, and School |
| Home Stake Oil and Gas Company Building |
| Hominy Armory |
| Hominy Osage Round House |
| Hominy School |
| Hooker Woodframe Grain Elevator |
| Hooper Brothers Coffee Company Building |
| Hopewell Baptist Church |
| Hotel Aldridge |
| Hotel Bell |
| Hotel Cherokee |
| Hotel Dale |
| Hotel Franklin |
| Hotel Lincoln |
| Hotel Love |
| Hotel Lowrey |
| Hotel Muskogee |
| Hotel Vinita |
| Hough Woodframe Elevator |
| House at 1554 SW Rogers |
| House Building |
| Hubbard, William and Mabel Donahoo, House |
| Hughes, George, House |
| Hugo Armory |
| Hugo Frisco Railroad Depot |
| Hugo Public Library |
| Humphreys Drugstore Building |
| Huston Elementary School |
| Idabel Armory |
| Immaculate Conception Church |
| Indian Citizen Building |
| Indian University of Tahlequah |
| India Temple Shrine Building |
| Ingle Brothers Broomcorn Warehouse |
| Ingram House |
| International Temple, Supreme Assembly, Order of the Rainbow for Girls |
| I.O.O.F. Building of Buffalo |
| I.O.O.F. Hall |
| Iroquois Apartments |
| Irving Baptist Church |
| Isparhecher House and Grave |
| Jackson Conoco Service Station |
| Jackson County Courthouse |
| Jackson School |
| Jacobson, Oscar B., House |
| James Carl, Sr., and Lucille Johnson Family House |
| Jefferson County Courthouse |
| Jewel Theater |
| Johnson Home |
| Johnson Hotel and Boarding House |
| Johnson House |
| Johnson, J. Coody, Building |
| Jones, Robert Lawton, House |
| Joyce House |
| Jurhee Apartments |
| Kaiser's Ice Cream Parlour |
| Kaufman, H. L., House |
| Kavanaugh and Shea Building |
| Kaw City Depot |
| Kaw Indian Agency |
| Kay County Courthouse |
| KCS Railway Depot |
| Kelley Club |
| Kennedy Mansion |
Data from United States Park Service and Wikidata
