Indiana - Criteria: C (architecture/engineering)
| Hedrick, John W., House |
| Heier's Hotel |
| Helfrich, Michael D., House |
| Helton-Mayo Farm |
| Heminger Travel Lodge |
| Hendricks County Bridge Number 316 |
| Hendricks County Poor Asylum |
| Hendricks, Thomas A., House and Stone Head Road Marker |
| Hendricks, Thomas A., Library |
| Henley, Henry, Public Library |
| Henry County Courthouse |
| Herriott House |
| Herron-Morton Place Historic District |
| Hershey House |
| Hesler, Clinton F., Farm |
| Hicksite Friends Meetinghouse (Wayne County Museum) |
| Highland Lawn Cemetery |
| Highland Park Neighborhood Historic District |
| Hillcrest Country Club |
| Hillforest (Forest Hill) |
| Hill, John Fitch, House |
| Hills and Dales Historic District |
| Hill, William, Polygonal Barn |
| Hinkle-Garton Farmstead |
| Hinkle, W. R., and Co. |
| Hinshaw, Elias, House |
| Hippodrome Theatre |
| Hirt, Alfred, House |
| Hoban, Martin, House |
| Hobart Carnegie Library |
| Hobart Commercial District |
| Hobart First Methodist Episcopal Church |
| Hoffman Hotel |
| Hofherr, Martin, Farm |
| Hoham-Klinghammer-Weckerle House and Brewery Site |
| Hohman Avenue Commercial Historic District |
| Holliday Hydroelectric Powerhouse and Dam |
| Hollingsworth House |
| Hominy Ridge Shelter House |
| Honeywell Memorial Community Center |
| Honeywell Studio |
| Hooker-Ensle-Pierce House |
| Hoosier Theater Building |
| Hoover, Eli, House and Confectionary |
| Hoover-Timme House |
| Hope Historic District |
| Hopewell Methodist Episcopal Church and Cemetery |
| Hopewell Presbyterian Church |
| Horace Mann Historic District |
| Horace Mann Public School No. 13 |
| Horner, Imre and Maria, House |
| Horner-Terrill House |
| Hose House No. 10 |
| Hose House No. 12 |
| Hotel LaFontaine |
| Hotel Washington |
| House at 823 Ohio Street |
| Howard Home |
| Howard Masonic Temple |
| Howard Park Historic District |
| Howe, John Badlam, Mansion |
| Hoyt, Lyman and Asenath, House |
| Hubbard, Willard and Josephine, House |
| Huber Motor Sales Building |
| Huddleston House Tavern, The |
| Huffman Mill Covered Bridge |
| Hulman Building [Morris Plan (Central Union Bank)] |
| Huntingburg Commercial Historic District |
| Huntingburg Town Hall and Fire Engine House |
| Hurlbert, Lewis, Sr., House |
| Hy-Red Gasoline Station |
| Ibach House |
| Iddings-Gilbert-Leader-Anderson Block |
| Igleheart, Edgar A., House |
| Illsley Place-West Rudisill Historic District |
| I & M Building |
| Immanuel Lutheran Church |
| Independence Historic District |
| Independent Turnverein |
| Indiana and Michigan Avenues Historic District |
| Indiana Avenue Historic District |
| Indiana Bell Building |
| Indiana Harbor Public Library |
| Indiana Limestone Company Building |
| Indiana Oxygen Company |
| Indianapolis Athletic Club |
| Indianapolis City Hall, Old |
| Indianapolis Fire Headquarters and Municipal Garage |
| Indianapolis Masonic Temple |
| Indianapolis Motor Speedway |
| Indianapolis News Building |
| Indianapolis Park and Boulevard System |
| Indianapolis Public Library Branch No. 3 |
| Indianapolis Public Library Branch No. 6 |
| Indianapolis Union Railroad Station |
| Indianapolis Union Station-Wholesale District |
| Indianapolis Veterans Administration Hospital |
| Indianapolis White Castle Number 3 |
| Indiana School for the Deaf |
| Indiana Soldiers' and Sailors' Children's Home |
Data from United States Park Service and Wikidata
