Indiana - Criteria: A (event)
| Broad Ripple Park Carousel |
| Brock, Pryor Farmstead |
| Bromwell Wire Works |
| Brookview-Irvington Park Historic District |
| Brookville Historic District |
| Brown County Bridge No. 36 |
| Brown County Courthouse Historic District |
| Brownell Block/Senger Dry Goods Company Building |
| Brown, John, Stone Warehouse |
| Brown, Samuel, House |
| Buckley Homestead |
| Burris House and Potawatomi Spring |
| Burton |
| Bush Stadium |
| Butler Community Mausoleum |
| Butler Fieldhouse |
| Cairo Skywatch Tower |
| Cambridge City Historic District |
| Camden Masonic Temple |
| Camp Edwin F. Glenn |
| Canal House |
| Cannelton Cotton Mills |
| Cannelton Historic District |
| Cantol Wax Company Building |
| Carmichael, Otto, House |
| Carnegie Hall of Moores Hill College |
| Carnegie Library of Covington |
| Carnegie Public Library |
| Carr High School |
| Carroll County Courthouse |
| Carroll County Infirmary |
| Cataract Covered Bridge |
| Cathcart |
| Cathedral of the Immaculate Conception |
| Catherine Street Historic District |
| Catlin Bridge |
| Cavanaugh Bridge |
| CCC Recreation Building-Nature Museum |
| Cedar Grove Bridge |
| Cedar Point Farm |
| Centennial Neighborhood District |
| Center Township Grade and High School |
| Centerville Historic District |
| Central Avenue School |
| Central Batesville Historic District |
| Central Court Historic District |
| Central High School & Boys Vocational School |
| Central House |
| Ceylon Covered Bridge |
| Champ's Ford Bridge |
| Chapin Park Historic District |
| Chatham-Arch Historic District |
| Chenoweth-Coulter Farm |
| Chesterfield Spiritualist Camp District |
| Chesterton Commercial Historic District |
| Chief Menominee Memorial Site |
| Chief Richardville House and Miami Treaty Grounds |
| Children's Dispensary |
| Christamore House |
| Cincinnati, Richmond, & Muncie Depot |
| Circle Theater |
| City Market |
| Clark, Wellington A., House |
| Clay County Courthouse |
| Clay County Hospital |
| Clinton County Courthouse |
| Clinton Downtown Historic District |
| Clore Plow Works-J.W. Whitlock and Company |
| Coburn, Henry P., Public School No. 66 |
| Coca-Cola Bottling Company Plant |
| Cole, Joseph J., Jr., House |
| Cole Motor Car Company |
| Colfax Carnegie Library |
| Collett Park |
| Collett Park Neighborhood Historic District |
| Collin's Ford Bridge |
| Collins School |
| Colonial |
| Colonial Gardens Commercial Historic District |
| Colored Knights of Pythias Castle Hall |
| Colter, Ben, Polygonal Barn |
| Columbia City Historic District |
| Columbia Club |
| Columbus City Hall |
| Columbus Historic District |
| Combination Shelter |
| Combs Addition Historic District |
| Conley's Ford Bridge |
| Conner's Bookstore |
| Conner Street Historic District |
| Conner, William, House |
| Convent Immaculate Conception Historic District |
| Converse Depot |
| Converse-Jackson Township Public Library |
| Cornell, William, Homestead |
| Corydon Battle Site |
| Corydon Historic District |
| Coulter Flats |
| County Bridge #45 |
| Courthouse Historic District |
Data from United States Park Service and Wikidata
