Indiana - Area of significance: Agriculture
| Teague Barn Wabash Importing Company Farm Stable |
| Thiebaud Farmstead |
| Traders Point Eagle Creek Rural Historic District |
| Traders Point Hunt Rural Historic District |
| Trippett-Glaze-Duncan-Kolb Farm |
| Tryon Farm |
| Utter-Gerig Round Barn |
| VanHuys, Andrew B., Round Barn |
| Van Reed Farmstead |
| Wertz-Bestle Farm |
| Westleigh Farms |
| Whitelock, Henry F., House and Farm |
| Wiltrout, Maria and Franklin, Polygonal Barn |
| Wolf, Mathias, Farm |
| Wood, John, Farmstead |
| Wynkoop-Taylor-Swanson-Sharp Farmstead |
| Yoder, Menno, Polygonal Barn |
| York, W. H., Round Barn |
| Young-Yentes-Mattern Farm |
Data from United States Park Service and Wikidata
