Wisconsin - Area of significance: Architecture
| Cords, Erwin, House |
| Cornelius, Charles and Theresa, House |
| Cotton House |
| Coumbe, John, Farmstead |
| Courthouse Hill Historic District |
| Courthouse Square Historic District |
| Courtney, J. B., Woolen Mills |
| Court Street Commercial Historic District |
| Court Street Methodist Church |
| Covered Bridge |
| Crawford County Courthouse |
| Crist, J. W., House |
| Crosby Block |
| Crosby, James B., House |
| Crosse, Dr. Charles G., House |
| Cudahy Chicago and North Western Railway Depot |
| Culton, Charles L., House |
| Cumberland Public Library |
| Cunningham, Bert and Mary, Round Barn |
| Cupola House |
| Curtin, Jeremiah, House |
| Curtis, David W. and Jane, House |
| Curtis-Kittleson House |
| Cushing Land Agency Building |
| Cutler, Morris, House |
| Cutter, Judson C., House |
| Dahinden, Edward J., House |
| Dahle, Henry L. and Sarah, House |
| Dahle, Herman B. and Anne Marie, House |
| Dahle, Onon B. and Betsy, House |
| Dahl, Martin K., House |
| Daily Northwestern Building |
| Daly, Elizabeth, House |
| Damon, Lowell, House |
| Dana, George and Mary Agnes, House |
| Dansk Evangelical Lutheran Kirke |
| Darling, Frederick L., House |
| Darlington Carnegie Free Library |
| Daubner, George H. and Frances, House |
| Davidson Hall |
| Davidson Windmill |
| Davies, Edward and Mary, House |
| Davis, Cyrus-Davis Brothers Farmhouse |
| Davis, Cyrus, Farmstead |
| Davis, H. R., House |
| Daviswood Ranch Homes Historic District |
| Day, Dr. Fisk Holbrook, House |
| Day, Isham, House |
| Delafield Fish Hatchery |
| Delavan Downtown Commercial Historic District |
| Delavan Post Office |
| Delavan Water Tower Park Historic District |
| Dells of the Eau Claire County Park |
| DeLong, Homer B., House |
| De Pere Public Library |
| Desmond-Farnham-Hustis House |
| Dessert, Joseph, Library |
| Devil's Lake State Park |
| Dick, Christian, Block |
| Dickinson, Decatur and Kate, House |
| Dinesen-Motzfeldt-Hettinger Log House |
| District School No. 1 |
| Division Street Historic District |
| Dix Street-Warner Street Historic District |
| Dodge, Edward, House |
| Dodge Mining Camp Cabin |
| Donald, John Sweet, Farmstead |
| Douglas County Courthouse |
| Douglass-Stevenson House |
| Dousman Hotel |
| Dousman Inn |
| Dow, John T., House |
| Dowling Apartment Building |
| Downtown Baraboo Historic District |
| Downtown Churches Historic District |
| Downtown Darien Historic District |
| Downtown Historic District |
| Downtown Historic District |
| Downtown Historic District |
| Downtown Plymouth Historic District |
| Draize, August, Farmstead |
| Drohman Cabin |
| Drummond, David, House |
| Dunbar, C. F., House |
| Dunlap, Adam, Farmstead |
| Dunlap Square Building |
| Dunroven House |
| Durand Free Library |
| Dwelley, William, House |
| Dwinnell, George, House |
| Eager Free Public Library |
| Eagle Bluff Lighthouse |
| Eagle Knitting Mills |
| Eagle Paper and Flouring Mill |
| Eagles Club |
| East Arcadia Roller Mill |
| East Brady Street Historic District |
| East Broadway Historic District |
| East Capitol Drive Historic District |
| East Division Street-Sheboygan Street Historic District |
Data from United States Park Service and Wikidata
