Nebraska - Criteria: C (architecture/engineering)
| Nye House |
| Oak Ballroom |
| O'Connor, Cornelius, House |
| Oft-Gordon House |
| Ohiowa Public School |
| O. K. Market |
| Old Log Cabin |
| Old Main, Nebraska Wesleyan University |
| Old Market Historic District |
| Old University Library |
| Olive, Ira Webster, House |
| Omaha Bolt, Nut and Screw Building |
| Omaha Ford Motor Company Assembly Plant |
| Omaha High School |
| Omaha National Bank Building |
| Omaha Park and Boulevard System |
| Omaha Public Library |
| Omaha Quartermaster Depot Historic District |
| O'Rourke, Capt. John, House |
| Osterman and Tremaine Building |
| Otoe County Courthouse |
| Packer's National Bank Building |
| Paddock Hotel |
| Palisade and Regent Apartments |
| Park Hill |
| Park School |
| Patterson Law Office |
| Pavelka Farmstead |
| Pawnee City Carnegie Library |
| Pawnee County Courthouse |
| Peerless Motor Company |
| People's State Bank |
| Perkins County Courthouse |
| Peterson, Peter, Farmstead |
| Phelps County Courthouse |
| Phi Delta Theta Fraternity House |
| Phillips, R. O., House |
| Pilgrim Holiness Church |
| Pinkie's Corner |
| Pisar, Frank, Farmstead |
| Pitz, Gottfried Gustav, Barn |
| Plattsmouth Bridge |
| Plattsmouth Main Street Historic District |
| Polk County Courthouse |
| Ponca Historic District |
| Poppleton Block |
| Porter-Thomsen House |
| Prairie Dog Creek Bridge |
| Presbyterian Church |
| President and Ambassador Apartments |
| Purdy, Rachel Kilpatrick, House |
| Quivey, M. B., House |
| Rackett Grange Hall # 318 |
| Rademacher, Frank J., House |
| Rad Jan Kollar cis 101 Z. C. B. J. |
| Rad Plzen cis. 9 Z.C.B.J. (SD10-6) |
| Rad Sladkovsky |
| Rad Slavin cis. 112 Z. C. B. J. Hall |
| Rattlesnake Creek Bridge |
| Red Cloud Bridge |
| Redick Tower |
| Red Willow County Courthouse |
| Reed, Wilber T., House |
| Republican River Bridge |
| Retzlaff Farmstead |
| Richardson County Courthouse |
| Rinne Farm |
| Riverside Park Dance Pavillion |
| Robinson, J. C., House |
| Rock County Courthouse |
| Rock Island Depot |
| Roeser, Oscar, House |
| Roscoe State Aid Bridge |
| Rose Realty-Securities Building |
| Rosewater School |
| Royer-Williams House |
| Ruffner, Peter E., House |
| Ryons-Alexander House |
| Sacred Heart Catholic Church Complex |
| Saddle Creek Underpass |
| Saint Joseph Parish Complex |
| Saint Luke's Protestant Episcopal Church |
| Saint Martin's Catholic Church |
| Saints Peter and Paul Catholic Church Complex |
| Saints Philip and James Parochial School |
| Salem Swedish Methodist Episcopal Church |
| Saline County Bank |
| Saline County Courthouse |
| Sandford Dugout |
| Sandford Hall |
| Sanford Hotel |
| Sappa Creek Bridge |
| Saunders County Courthouse |
| Saunders School |
| Sautter, John, Farmhouse |
| Schmuck, J., Block |
| Schneider, R. B., House |
| Schuetz Log Cabin |
| Schuyler Carnegie Library |
| Schuyler City Hall |
Data from United States Park Service and Wikidata
