Indiana - Significance region: State
| Howard Home |
| Hoyt, Lyman and Asenath, House |
| Huddleston House Tavern, The |
| Huffman Mill Covered Bridge |
| Hy-Red Gasoline Station |
| Indianapolis Athletic Club |
| Indianapolis City Hall, Old |
| Indianapolis Veterans Administration Hospital |
| Indiana School for the Deaf |
| Indiana Soldiers' and Sailors' Children's Home |
| Indiana State Federation of Colored Women's Clubs |
| Indiana State Soldiers Home Historic District |
| James E. Roberts School 97 |
| Jenkins Place |
| Jones, Col. William, House |
| Kahn Tailoring Company |
| Kappa V Archeological Site (12MO301) |
| Kennedy, Archibald M., House |
| Kent House and Hitchens House |
| Kerr, William, House |
| Kintner-McGrain House |
| Kinzer, John, House |
| Kneipp Springs Historic District |
| Knightstown Academy |
| Knightstown Historic District |
| Kokomo County Club Golf Course |
| Lackey-Overbeck House |
| Lafayette Place Historic District |
| Lake County Courthouse |
| Lane, Henry S., House |
| Laughery Creek Bridge |
| Leedy, Bert, Round Barn |
| Lieber, Richard, Log Cabin |
| Linwood Colonial Apartments |
| Little Cedar Grove Baptist Church |
| Littleton, Frank, Round Barn |
| Lock No. 33 Lock Keeper's House, and Wabash and Erie Canal Lock No. 33 |
| Low Spur Archeological Site (12J87) |
| Marion County Bridge 0501F |
| Marktown Historic District |
| Marshall, Thomas R., House |
| Martinsville High School Gymnasium |
| MATERIAL SERVICE (shipwreck) |
| Matthews Stone Company Historic District |
| McCormick's Creek State Park Entrance and Gatehouse |
| McKim Observatory, DePauw University |
| Medora Covered Bridge |
| Meshingomesia (Mihsiinkweemisa) Cemetery and Indian School Historic District |
| Michigan City Lighthouse |
| Michigan Road Toll House |
| Military Park |
| Minnetrista Boulevard Historic District |
| Moffett-Ralston House |
| Montgomery County Jail and Sheriff's Residence |
| Mooresville Friends Academy Building |
| Morris-Butler House |
| Moscow Covered Bridge |
| MUSKEGON Shipwreck Site |
| Mussel Knoll Archeological Site (12GI11) |
| New Harmony Historic District |
| Newport Covered Bridge |
| New York Chicago and St. Louis Railroad Steam Locomotive No. 765 |
| Nike Missile Site C47 |
| Noble County Sheriff's House and Jail |
| Norris Ford Covered Bridge |
| Oak Hill Cemetery |
| Offutt Covered Bridge |
| Old Crescent, The |
| Oldenburg Historic District |
| Oldfields |
| Old Jeffersonville Historic District |
| Old Northside Historic District |
| Old Richmond Historic District |
| Old State Bank |
| Oliver, Joseph D., House |
| Opel, John, House |
| Orr, Robert, Polygonal Barn |
| Orr, William, House |
| Oxford Community Mausoleum |
| Palais Royale Building |
| Pierson-Griffiths House |
| Pleak, Strauther, Round Barn |
| Pleasant Ridge Historic District |
| Pollard-Nelson House |
| Posey County Courthouse Square |
| Possom Bottom Covered Bridge |
| Potter's Covered Bridge |
| Potts Creek Rockshelter Archeological Site (12CR110) |
| Propylaeum, The (John W. Schmidt House) |
| Prosser House |
| Pyeatt’s Mill Iron Bridge |
| Ranck, Thomas, Round Barn |
| Rankin, Alexander Taylor, House |
| Rankin, Rebecca, Round Barn |
| Read Dunes House |
| Reitz, John Augustus, House |
| Richland-Plummer Creek Covered Bridge |
| Richmond High School |
| Ridgeway, Marion, Polygonal Barn |
| Rising Sun Historic District |
Data from United States Park Service and Wikidata
