Indiana - Area of significance: Architecture
| Hagerstown I.O.O.F. Hall |
| Haimbaugh, John, Round Barn |
| Haines, James, Farm |
| Halderman-Van Buskirk Farmstead |
| Hall-Crull Octagonal House |
| Halleck, Charles, Student Center |
| Hall Farm |
| Hall School |
| Halsted, Melvin A., House |
| Hamilton County Courthouse Square |
| Hamilton, John, House |
| Hamilton Township Schoolhouse No. 4 |
| Hamline Chapel, United Methodist Church |
| Hammond Block (Budnick's Trading Mart) |
| Hanna-Ochler-Elder House |
| Hanover College Historic District |
| Hansen Branch-Hammond Public Library |
| Happy Hollow Heights Historic District |
| Harcourt, James F., House |
| Harding and Miller Music Company |
| Hardy-Baumgaertner House |
| Harrell, Dr. Samuel, House |
| Harriett |
| Harris, Bright B., House |
| Harrison Hill Historic District |
| Hartford City Courthouse Square Historic District |
| Hartman, Louis and Anna K. Kunz, House |
| Haskell and Barker Historic District |
| Haste-Crumpacker House |
| Hathaway-Parker House |
| Haubstadt State Bank |
| Haven Hubbard Home |
| Haverstick, Hiram A., Farmstead |
| Haw Creek Leather Company |
| Hawley Heights Historic District |
| Hawthorne Branch Library No. 2 |
| Hay-Morrison House |
| Haynes, John and Dorothy, House |
| Hazelett, Richard M., House |
| HCS Motor Car Company |
| Heagy, D.W., Farm |
| Heath, David S., House |
| Hebron Meadows Historic District |
| Heck-Hasler House |
| Hedden's Grove Historic District |
| Hedrick, John W., House |
| Heier's Hotel |
| Helfrich, Michael D., House |
| Helton-Mayo Farm |
| Heminger Travel Lodge |
| Hendricks County Poor Asylum |
| Hendricks, Thomas A., House and Stone Head Road Marker |
| Hendricks, Thomas A., Library |
| Henley, Henry, Public Library |
| Henry County Courthouse |
| Henry County Memorial Park |
| Herriott House |
| Herron-Morton Place Historic District |
| Hershey House |
| Hesler, Clinton F., Farm |
| Hicksite Friends Meetinghouse (Wayne County Museum) |
| Highland Golf and Country Club |
| Highland Lawn Cemetery |
| Highland Park Neighborhood Historic District |
| 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 |
| 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 |
Data from United States Park Service and Wikidata
