Arkansas - Area of significance: Architecture
| New Blaine School |
| New Edinburg Commercial Historic District |
| New Home School and Church |
| New Home School Building |
| New Mt. Pisgah School |
| Newport American Legion Community Hut |
| Newport Junior & Senior High School |
| New Rocky Comfort Jail |
| New South Inn |
| New Theatre |
| Newton County Courthouse |
| Newton County Jail |
| Newton Sutterfield Farmstead |
| New Zion AME Zion Church |
| Nichol House |
| Nimmo Clubhouse |
| No. 12 School |
| Noll, Willis, House |
| Noricks Chapel School |
| Norman Town Square |
| North Elm Street Historic District |
| North Garvin Drive Historic District |
| North Little Rock City Hall |
| North Little Rock High School |
| North Little Rock Post Office |
| North Little Rock Veterans Administration Hospital Historic District |
| North Mock Street Historic District |
| North Washington Street Historic District |
| Norwood School |
| Norwood, William H., House |
| Nutt-Trussell Building |
| Oak Forest United Methodist Church |
| Oak Grove School |
| Oak Hill Mausoleum |
| Oakland |
| Oark School-Methodist Church |
| O'Bryant, W.E., Bell Tower |
| Ogan, Servetus W., House |
| O'Kane-Jacobs House |
| Old Alexander House |
| Old Bell Telephone Building |
| Old Bethel Methodist Church |
| Old Camden Post Office |
| Old Central Fire Station |
| Old Huntington Jail |
| Old Main, University of Arkansas |
| Old Post Office |
| Old Post Office |
| Old Post Office |
| Old Post Office Building and Customhouse |
| Old Randolph County Courthouse |
| Old Searcy County Jail |
| Old Springdale High School |
| Old State House |
| Old Town Historic District |
| Old Union School |
| Oliver House |
| Olmstead, T. E., & Son Funeral Home |
| O'Neal, Howard, Barn |
| Opal's Steak House |
| Orange Street Presbyterian Church |
| Ouachita Avenue Historic District |
| Ouachita County Courthouse |
| Our Lady of Perpetual Help Church |
| Owens, Silas, Sr., House |
| Owings House |
| Ozark Courthouse Square Historic District |
| Ozmer House |
| Pangburn, Austin, House |
| Paragould Downtown Commercial Historic District |
| Paris Commercial Historic District |
| Parkdale Baptist Church-AS0051 |
| Parkdale Methodist Church |
| Parker-Hickman Farm Historic District |
| Parker House |
| Park Hill |
| Park Hill Fire Station and Water Company Complex |
| Park Hill Historic District |
| Park Hotel |
| Parks-Reagan House |
| Parks School |
| Parkview Apartments |
| Parkway Courts Historic District |
| Parnell Hall |
| Parnell-Sharpe House |
| Paschall House |
| Passmore, Charley, House |
| Passmore House |
| Patman House |
| Patrick, Dr. James. House |
| Patterson, Walter, Filling Station |
| Patterson, Walter, House |
| Patteson House |
| Patton House |
| Pea Ridge Commercial Historic District |
| Pea Ridge School Building |
| Pearson-Robinson House |
| Peel, Col. Samuel W., House |
| Pence-Carmichael Farm, Barn and Root Cellar |
| Pennington House |
Data from United States Park Service and Wikidata
