New York - Role: Building
| J. P. Morgan & Co. Building |
| Judson Memorial Church, Campanile, and Judson Hall |
| Jug Tavern |
| Julius' Bar |
| Justice Court Building |
| J.W. Ruger & Deck Bros. Building |
| Kamman, Building, The |
| Kane, John, House |
| Kane, John P., Mansion |
| Karpen House |
| Keene Valley Library |
| Keeney House |
| Keeper's House at Williamsbridge Reservoir |
| Kehila Kedosha Janina Synagogue |
| Keith and Branch Ford Motors Factory and Showroom |
| Keith, James, House and Brown-Morey-Davis Farm |
| Kellerman Log Cabin |
| Kellogg, George Sumner, House |
| Kellogg, J. Francis, House |
| Kellogg, The, House |
| Kelly, Col. William, House |
| Kelly House |
| Kelly Round Barn |
| Kelsey-Davey Farm |
| Kemp & Burpee-Brown-Lipe Company Buildings |
| Kemp, John Wolf, House |
| Kennan, A. P. W., House |
| Kennedy Cottage |
| Kent-Delord House |
| Kenyon Residences |
| Kenyon, William, House |
| Kessel Park Inn |
| Ketchum, B., House |
| Kibler High School |
| Kilmer, Jonas M., House |
| Kimble-Nellé House |
| Kimlin Cider Mill |
| King Manor |
| King, Polaski, House |
| Kings County Savings Bank |
| Kings Daughters Public Library |
| Kingsford House |
| Kingsland Homestead |
| Kingston Barrel Factory |
| Kingston City Hall |
| Kingston City Library |
| Kingston Gas and Electric Co. Building |
| Kingsway Jewish Center |
| Kinne, David and Mary, Farmstead |
| Kirk House |
| Kirkland Hotel |
| Kirstein Building |
| Kismet Temple |
| Kleinhans Music Hall |
| Knapp House |
| Knickerbocker Field Club |
| Knickerbocker Hotel |
| Knickerbocker Mansion |
| Knickerbocker Press Building |
| Knights of the Maccabees Hall |
| Knollcroft |
| Knollwood |
| Knower House |
| Knox Building |
| Knox District School No. 5 |
| Knox Headquarters |
| Knox Mansion |
| Kol Israel Synagogue |
| Koon, Henry, House |
| Kreiner Malt House and Grain Elevator |
| Kreischer House |
| Kreuzer-Pelton House |
| Krom, Lucas, Stone House |
| Krom Stone House and Dutch Barn |
| Krom Stone House at 31 Upper Whitfield Road |
| Krom Stone House at 45 Upper Whitfield Road |
| Krum, Hiram, House |
| Kurtz, J., and Sons Store Building |
| La Casina |
| Lace House |
| Lackman, J. Leonard, House |
| Lacona Railroad Station and Depot |
| Lacy-Van Vleet House |
| Ladd Farmhouse |
| Ladentown United Methodist Church |
| Lady Tree Lodge |
| Lady Washington Hose Company |
| La Farge Land Office |
| La Farge Retainer Houses |
| La Fargeville United Methodist Church |
| Lafayette Avenue Presbyterian Church |
| Lafayette Flats |
| Lafayette High School |
| Lafevre, John A., House and School |
| LaGrange District School |
| LaGrange Terrace |
| Lainhart Farm Complex and Dutch Barn |
| Lake Pleasant Town Hall |
| Lake Shore & Michigan Southern Freight Depot |
| Lake Shore & Michigan Southern Railroad Station |
Data from United States Park Service and Wikidata
