New York - Criteria: A (event)
| Kings Daughters Public Library |
| Kingsford Historic District |
| Kingston City Hall |
| Kingston City Library |
| Kingston-Port Ewen Suspension Bridge |
| Kingston/Rondout 2 Lighthouse |
| Kingston Stockade District |
| Kingsway Jewish Center |
| Kinne, David and Mary, Farmstead |
| Kip-Beekman-Heermance Site (A027-16-0223) |
| Kirstein Building |
| Kismet Temple |
| Knapp, Timothy, House and Milton Cemetery |
| Knickerbocker Press Building |
| Knights of the Maccabees Hall |
| Knox District School No. 5 |
| Kol Israel Synagogue |
| Kreiner Malt House and Grain Elevator |
| Lacona Railroad Station and Depot |
| Ladentown United Methodist Church |
| Lady Tree Lodge |
| La Farge Land Office |
| La Farge Retainer Houses |
| La Fargeville United Methodist Church |
| Lafayette Avenue Presbyterian Church |
| Lafayette Park Historic |
| Lafevre, John A., House and School |
| LaGrange District School |
| Lainhart Farm Complex and Dutch Barn |
| Lake George Battlefield Park Historic District |
| Lake Mohonk Mountain House Complex |
| Lake Pleasant Town Hall |
| Lakeside Park |
| Lake View Cemetery |
| Lake View Grange No. 970 |
| Lalino Stone Arch Bridge |
| Lamb's Club |
| Lancaster District School No. 6 |
| Lancaster Municipal Building |
| Lance Farm |
| Land of Clover |
| Land Office |
| Landon, Samuel, House |
| LAND TORTOISE (radeau) Shipwreck Site |
| Lane Cottage |
| Lansingburgh Academy |
| Lansingburgh Village Burial Ground |
| Laraway, John and Martinus, Inn |
| Larom Cottage |
| Larom-Welles Cottage |
| Larzelere Tavern |
| Lasell Hall |
| Latimer Reef Light Station |
| Lattingtown Baptist Church |
| Leavenworth Apartments |
| Lebanon Springs Union Free School |
| Leech-Lloyd Farmhouse and Barn Complex |
| Leech-Parker Farmhouse |
| Leeds Flat Site |
| Lee, Higginson & Company Bank Building |
| Lee School |
| Leetch, Dr. Henry, House |
| LeFevre, Abraham and Maria, House |
| Lefferts Manor Historic District |
| LeGrange Farmstead |
| Lehigh Valley Railroad Barge 79 |
| Lehigh Valley Railroad Depot |
| Lehigh Valley Railroad Station |
| Lehigh Valley Railroad Station |
| Leis Block |
| Leis Cottage |
| Lent Cottage |
| Lent Homestead and Cemetery |
| Leon Grange No. 795 |
| Leopold Street Shule |
| LeRay, Vincent, House |
| LeRoy House and Union Free School |
| Letchworth State Park |
| LETTIE G. HOWARD (schooner) |
| Levitz Family Farm |
| Lewis County Fairgrounds |
| Lewis County Soldiers' and Sailors' Monument |
| Lewis, Harry and Molly, House |
| Lexington House |
| Leyden Common School No. 2 |
| Liberty Street Historic District |
| Life Savers Building |
| Lighthouse |
| Ligonier Point Historic District |
| LILAC, United States Lighthouse Tender |
| Lincoln, Anselm, House |
| Linde Air Products Factory |
| Linden-South Historic District |
| Linwood |
| Lipe-Rollway Corporation Building |
| Lisanti Chapel |
| Lisbon Railroad Depot |
| Lisbon Town Hall |
| Lithuanian National Association Hall |
| Little Falls City Hall |
Data from United States Park Service and Wikidata
