National Register listings in Suffolk County, New York
Most notable listings
First Presbyterian Church NHL Smithtown · Building · listed 1977 
First Presbyterian Church NHL Sag Harbor · Building · listed 1994 
MODESTY (Sloop) NHL West Sayville · Structure · listed 2001 
Montauk Point Lighthouse NHL Montauk · Structure · listed 1969 
Moran, Thomas, House NHL East Hampton · Building · listed 1966 
Mount, William Sydney, House NHL Stony Brook · Building · listed 1966 
Old House, The NHL Cutchogue · Building · listed 1966 
Pollock, Jackson, House and Studio NHL East Hampton · Building · listed 1994 
Priscilla (Long Island Sound Oyster Sloop) NHL West Sayville · Structure · listed 2006 
Rudolph Oyster House NHL West Sayville · Building · listed 2001 Historic districts (78)
- Bay Crest Historic District — Huntington Bay
- Beach Road Historic District — Southampton
- Beachbend — Nissequogue
- Beaux Arts Park Historic District — Huntington Bay
- Bellport Village Historic District — Bellport
- Benner-Foos-Ceparano Estate — Poquott
- Bethel Christian Avenue Historic District — Setauket
- Big Duck Ranch — Flanders
- Blydenburgh Park Historic District — Smithtown
- Box Hill Estate — St. James
- Briar Patch Road Historic District — East Hampton
- Buell's Lane Historic District — East Hampton
- Camp Quinipet — Shelter Island Heights
- Caroline Church and Cemetery — Brookhaven
- Cutting, Bayard, Estate — Great River
- Davis Field — Bayport
- Eagle's Nest (Boundary Increase) — Centerport
- East Farm — Head of the Harbor
- East Hampton Village District — East Hampton
- East Hampton Village Historic District (Boundary Increase) — East Hampton
- East Marion Main Road Historic District — East Marion
- East Shore Road Historic District — Halesite
- Egypt Lane Historic District — East Hampton
- Fire Island Light Station Historic District (Boundary Increase) — Fire Island
- Fort Terry Historic District — Southold
- Frank Melville Memorial Park — Setauket
- Goose Hill Road Historic District — Cold Spring Harbor
- Greenport Railroad Station — Greenport
- Greenport Village Historic District — Greenport
- Harbor House — Nissequogue
- Harbor Road Historic District — Cold Spring Harbor
- Heckscher Park — Huntington
- Jericho Historic District — East Hampton
- Jones Road Historic District — East Hampton
- Land of Clover — Nissequogue
- Long Island National Cemetery — Farmingdale
- Main Street Historic District — Cold Spring Harbor
- Miller Place Historic District — Miller Place
- Mills Pond District — St. James
- Montauk Association Historic District — Montauk
- North Main Street Historic District — Southampton
- North Main Street Historic District — East Hampton
- Northport Veterans Administration Hospital Historic District — Northport
- Old Field Club and Farm — East Setauket
- Old Town Green Historic District — Huntington
- Old Town Hall Historic District — Huntington
- Orient Historic District — Orient
- Pantigo Road Historic District — East Hampton
- Phyfe, James W. and Anne Smith, Estate — Nissequogue
- Point OWoods Historic District — Point OWoods
- Port Jefferson Village Historic District — Port Jefferson
- Quogue Historic District — Quogue
- Riverhead Main Street Historic District — Riverhead
- Ryan, William J., Estate — Nissequogue
- Sag Harbor Hills, Azurest, and Ninevah Beach Subdivisions Historic District — Sag Harbor
- Sag Harbor Village District — Sag Harbor
- Sag Harbor Village District (Boundary Increase) — Sag Harbor
- Sagaponack Historic District — Southampton
- Saint James District — Saint James
- Second and Ostrander Historic District — Riverhead
- Shelter Island Heights Historic District — Shelter Island Heights
- Shore Cottage — Head of the Harbor
- Shore Road Historic District — Cold Spring Harbor
- Sisters of St. Dominic Motherhouse Complex — North Amityville
- Sisters of St. Joseph Motherhouse, Brentwood — Brentwood
- Southampton Village Historic District — Southampton
- Southampton Village Historic District (Boundary Increase) — Southampton
- Southold Historic District — Southold
- Southside Sportsmens Club District — Great River
- Sylvester Manor — Shelter Island
- Thatch Meadow Farm — Head of the Harbor
- Tuthill, Daniel and Henry P., Farm — Jamesport
- Village of Branch Historic District — Branch
- Wardenclyffe Laboratory — Shoreham
- Wetherill, Kate Annette, Estate — Head of the Harbor
- Wickapogue Road Historic District — Southampton
- Woodcrest — Nissequogue
- Wyandanch Club Historic District — Smithtown
All listings
Places: Huntington (38) · East Hampton (19) · Southampton (16) · Cold Spring Harbor (13) · West Hills (9) · Huntington Bay (8) · Nissequogue (8) · Montauk (7) · Bay Shore (7) · Centerport (7) · Sag Harbor (7) · Southold (7)
| Name | Place | Type | Listed |
|---|---|---|---|
| Amagansett U.S. Life-Saving and Coast Guard Station | Amagansett | Building | 2018 |
| AN/FPS-35 Radar Tower and Antenna | Montauk | Building | 2002 |
| Babylon Library, The | Babylon | Building | 2015 |
| Babylon Town Hall | Babylon | Building | 2005 |
| Balcastle | Southampton | Building | 1986 |
| Bald Hill Schoolhouse | Farmingville | Building | 1988 |
| Bates, Charles and Anna, House | Greenport | Building | 2017 |
| Bay Crest Historic District | Huntington Bay | District | 1985 |
| Bay Shore Hose Company No. 1 Firehouse | Bay Shore | Building | 2001 |
| Bay Shore Methodist Episcopal Church | Bay Shore | Building | 2001 |
| Bayles Shipyard | Port Jefferson | Building | 2000 |
| Baylis, M., House | Melville | Building | 1985 |
| Beach Road Historic District | Southampton | District | 1986 |
| Beachbend | Nissequogue | District | 1993 |
| Beaux Arts Park Historic District | Huntington Bay | District | 1985 |
| Beebe Windmill | Bridgehampton | Building | 1978 |
| Bell, Mary E., House (Additional Documentation) | Center Moriches | Building | 2020 |
| Bellport Academy | Bellport | Building | 1980 |
| Bellport Village Historic District | Bellport | District | 1980 |
| Benjamin, James, Homestead | Flanders | Building | 1986 |
| Benner-Foos-Ceparano Estate | Poquott | District | 2016 |
| Bethel AME Church and Manse | Huntington | Building | 1985 |
| Bethel Christian Avenue Historic District | Setauket | District | 2017 |
| Big Duck Ranch | Flanders | District | 2008 |
| Big Duck, The | Flanders | Building | 1997 |
| Blydenburgh Park Historic District | Smithtown | District | 1983 |
| Booth, Mary Louise, Girlhood House | Yaphank | Building | 2015 |
| Bowers, Dr. Wesley, House | Southampton | Building | 1986 |
| Bowes House | Huntington Bay | Building | 1985 |
| Box Hill Estate | St. James | District | 1973 |
| Bragg, Caleb, Estate | Montauk | Building | 1987 |
| Brecknock Hall | Stirling/Town of Southold | Building | 2005 |
| Breese, James L., House | Southampton | Building | 1980 |
| Brewster House | East Setauket | Building | 2008 |
| Briar Patch Road Historic District | East Hampton | District | 1988 |
| Bridgehampton Presbyterian Church | Bridgehampton | Building | 2017 |
| Brown, George McKesson, Estate-Coindre Hall | Huntington Station | Building | 1985 |
| Brush Farmstead | Huntington | Building | 1985 |
| Buell's Lane Historic District | East Hampton | District | 1988 |
| Buffett, Eliphas, House | Centerport | Building | 1985 |
| Buffett, Joseph, House | Cold Spring Harbor | Building | 1985 |
| Bumpstead, John, House | Cold Spring Harbor | Building | 1985 |
| Bumpstead, John, House (Boundary Decrease) | Cold Spring Harbor | Building | 2021 |
| Burr, Carll S., Mansion | Commack | Building | 1985 |
| Burr, Carll, Jr., House | Commack | Building | 1985 |
| By-the-Harbor | Nissequogue | Building | 1993 |
| Camp Quinipet | Shelter Island Heights | District | 2005 |
| Carll House | Huntington | Building | 1985 |
| Carll House | Dix Hills | Building | 1985 |
| Carll House (Boundary Decrease) | Dix Hills | Building | 2022 |
| Carll, Ezra, Homestead | Huntington Station | Building | 1985 |
| Carll, Marion, Farm | Commack | Building | 1979 |
| Caroline Church and Cemetery | Brookhaven | District | 1991 |
| Carrington House | Fire Island Pines | Building | 2014 |
| Cauldwell, William, House | Noyac | Building | 2009 |
| Cedar Island Lighthouse | Sag Harbor | Building | 2003 |
| Cerny's Bakery | Bohemia | Building | 2020 |
| Chase, William Merritt, Homestead | Southampton | Building | 1983 |
| Cherry Grove Community House and Theatre | Cherry Grove | Building | 2013 |
| Chichester's Inn | West Hills | Building | 1985 |
| COIMBRA (shipwreck and remains) | Westhampton | Site | 2013 |
| Cold Spring Harbor Beach Club | New York | Building | 2012 |
| Cold Spring Harbor Fire District Hook and Ladder Company Building | Cold Spring Harbor | Building | 2003 |
| Cold Spring Harbor Library | Cold Spring Harbor | Building | 1985 |
| Coltrane House | Dix Hills | Building | 2007 |
| Commack Methodist Church and Cemetery | Huntington | Building | 1985 |
| Congregation Tifereth Israel Synagogue | Greenport | Building | 2006 |
| Congregational Church of Patchogue | Patchogue | Building | 1993 |
| Conklin, David, House | Cold Spring Harbor | Building | 1985 |
| Conklin, Nathaniel, House | Babylon | Building | 1988 |
| Corwith-Jones Farmhouse | Southampton | Building | 2025 |
| Corwith, William, House | Bridgehampton | Building | 2013 |
| Cox, Richard, House | Mattituck | Building | 1986 |
| Crest, The | Huntington | Building | 2007 |
| Crest, The | Huntington | Building | 2007 |
| Crest, The (Boundary Increase) | Huntington | Building | 2022 |
| Crowther House | Westhampton Beach | Building | 1985 |
| CULLODEN, H.M.S., Shipwreck Site | Montauk | Site | 1979 |
| Cutting, Bayard, Estate | Great River | District | 1973 |
| Davis Field | Bayport | District | 2008 |
| Davis Town Meeting House | Coram | Building | 2001 |
| Davis, Charles Homer, House | Lloyd Harbor | Building | 2006 |
| de Kooning, Elaine, House and Studio | East Hampton | Building | 2022 |
| Delamater-Bevin Mansion | Asharoken | Building | 1985 |
| Donnell, Harry E., House | Eatons Neck | Building | 1985 |
| Dove, Arthur-Torr, Helen, Cottage | Centerport | Building | 2000 |
| Dowden Tannery | Cold Spring Harbor | Building | 1985 |
| Downs House and Farm | Riverhead | Building | 2016 |
| Eagle's Nest (Additional Documentation) | Huntington | Building | 1985 |
| Eagle's Nest (Boundary Increase) | Centerport | District | 2021 |
| East Farm | Head of the Harbor | District | 1993 |
| East Hampton Railroad Station | East Hampton | Building | 2000 |
| East Hampton Village District | East Hampton | District | 1974 |
| East Hampton Village Historic District (Boundary Increase) | East Hampton | District | 1988 |
| East Marion Main Road Historic District | East Marion | District | 2019 |
| East Shore Road Historic District | Halesite | District | 1985 |
| Eatons Neck Light | Huntington | Building | 1973 |
| Edwards House, The | Sayville | Building | 2010 |
| Egypt Lane Historic District | East Hampton | District | 1988 |
| ELVIRA (sloop) | Brookhaven | Structure | 2012 |
| Everit, John, House | West Hills | Building | 1985 |
| Farnum, William A., Boathouse | Sag Harbor | Building | 2017 |
| Felix, N. J., House | Asharoken | Building | 1985 |
| Field, Marshall, III, Estate | Lloyd Harbor | Building | 1979 |
| Fire Island Light Station | Bay Shore | Structure | 1981 |
| Fire Island Light Station Historic District (Boundary Increase) | Fire Island | District | 2010 |
| First Congregational Church of Bay Shore | Bay Shore | Building | 2002 |
| First Congregational Church of New Village | Lake Grove | Building | 2002 |
| First National Bank of Port Jefferson | Port Jefferson | Building | 2005 |
| First Presbyterian Church NHL | Smithtown | Building | 1977 |
| First Presbyterian Church NHL | Sag Harbor | Building | 1994 |
| Floyd, William, House | Mastic Beach | Building | 1980 |
| Fort Corchaug Archeological Site NHL | Cutchogue | Site | 1974 |
| Fort Golgotha and the Old Burial Hill Cemetery | Huntington | Site | 1981 |
| Fort Hill Estate | Lloyd Harbor | Building | 1988 |
| Fort Salonga | Fort Salonga | Site | 1982 |
| Fort Terry Historic District | Southold | District | 2021 |
| Foster-Meeker House | Westhampton Beach | Building | 2009 |
| Frank Melville Memorial Park | Setauket | District | 2010 |
| Frederick and Annie Wagner Residence and St. Patrick's Roman Catholic Church | Smithtown | Building | 2019 |
| Gamecock Cottage | Stony Brook | Building | 2007 |
| Gardiners Island Windmill | East Hampton | Building | 1978 |
| Geoghegan, Charles, House | Huntington Bay | Building | 1985 |
| Gildersleeve, Andrew, Octagonal Building | Mattituck | Building | 1976 |
| Gilsey Mansion | Huntington | Building | 1985 |
| Goodale, Capt. C., House | Southampton | Building | 1986 |
| Goose Hill Road Historic District | Cold Spring Harbor | District | 1985 |
| Gravesite, Rev. Paul Cuffee | Hampton Bays | Site | 2010 |
| Green, John, House | Huntington Bay | Building | 1985 |
| Greenport Railroad Station | Greenport | District | 1989 |
| Greenport Village Historic District | Greenport | District | 1984 |
| Guastavino, Rafael Jr., House | Bay Shore | Building | 2013 |
| Halliock Inn | Smithtown | Building | 1974 |
| Hallock Homestead | Northville | Building | 1984 |
| Hallock-Bilunas Farmstead | Jamesport | Building | 2003 |
| Hallock, Joseph Nelson, House | Southold | Building | 2005 |
| Hallock, Noah, House | Rocky Point | Building | 2013 |
| Halsey Estate-Tallwood | West Hills | Building | 1985 |
| Harbor House | Nissequogue | District | 1993 |
| Harbor Road Historic District | Cold Spring Harbor | District | 1985 |
| Harned, John, House | Centerport | Building | 1985 |
| Harrison, Wallace K., Estate | West Hills | Building | 1985 |
| Hauppauge Methodist Episcopal Church | Hauppague | Building | 2020 |
| Havens, James, Homestead | Shelter Island | Building | 1986 |
| Hawkins Homestead | Stony Brook | Building | 1988 |
| Hawkins, Jedediah, House | Jamesport | Building | 2008 |
| Hawkins, Robert, Homestead | Yaphank | Building | 1986 |
| Hayground Windmill | East Hampton | Building | 1978 |
| Heckscher Park | Huntington | District | 1985 |
| Hewlett House | Cold Spring Harbor | Building | 1985 |
| High House & Studio | Southold (Hamlet of Peconic) | Building | 2025 |
| Homan-Gerard House and Mills | Yaphank | Building | 1988 |
| Hook Windmill | East Hampton | Building | 1978 |
| Hopkins, Samuel, House | Miller Place | Building | 2009 |
| Horton Point Lighthouse | Southold | Building | 1994 |
| House at 200 Bay Avenue | Huntington Bay | Building | 1985 |
| House at 244 Park Avenue | Huntington | Building | 1985 |
| Ireland-Gardiner Farm | Greenlawn | Building | 1985 |
| Jagger House | Westhampton | Building | 1978 |
| Jamesport Meeting House | Jamesport | Building | 2009 |
| Jarvis-Fleet House | Huntington | Building | 1985 |
| Jericho Historic District | East Hampton | District | 1988 |
| John Steinbeck Cottage | Sag Harbor | Building | 2025 |
| Jones Road Historic District | East Hampton | District | 1988 |
| Kane, John P., Mansion | Huntington Bay | Building | 1985 |
| Karpen House | Lloyd Harbor | Building | 2006 |
| Kennan, A. P. W., House | Huntington Bay | Building | 1985 |
| Ketchum, B., House | Huntington | Building | 1985 |
| Land of Clover | Nissequogue | District | 1993 |
| Landon, Samuel, House | Southold | Building | 2005 |
| Latimer Reef Light Station | Fisher's Island | Building | 2006 |
| LITTLE JENNIE (Chesapeake Bay bugeye) | Centerport | Structure | 1986 |
| Lloyd Harbor Lighthouse | Lloyd Harbor | Structure | 1989 |
| Lloyd, Joseph, House | Huntington | Building | 1976 |
| Long Island National Cemetery | Farmingdale | District | 2016 |
| Longbotham, Nathaniel, House | Stony Brook | Building | 1989 |
| Losee, Isaac, House | Huntington | Building | 1985 |
| Lowndes, Stanley H., House | Northport | Building | 2019 |
| Main Street Historic District | Cold Spring Harbor | District | 1985 |
| Mallows, The | Head of the Harbor | Building | 1993 |
| Manhanset Chapel | Shelter Island | Building | 1997 |
| Masury Estate Ballroom | Center Moriches | Building | 1986 |
| Maycroft | North Haven | Building | 1995 |
| Middle Island Presbyterian Church | Middle Island | Building | 2005 |
| Miller Place Historic District | Miller Place | District | 1976 |
| Mills Pond District | St. James | District | 1973 |
| Miss Amelia's Cottage | Amagansett | Building | 1994 |
| Modern Times School | Brentwood | Building | 1994 |
| MODESTY (Sloop) NHL | West Sayville | Structure | 2001 |
| Mollenhauer, John, House | Bay Shore | Building | 2014 |
| Montauk Association Historic District | Montauk | District | 1976 |
| Montauk Manor | Montauk | Building | 1984 |
| Montauk Point Lighthouse NHL | Montauk | Structure | 1969 |
| Montauk Tennis Auditorium | Montauk | Building | 1988 |
| Moran, Thomas, House NHL | East Hampton | Building | 1966 |
| Mount, William Sydney, House NHL | Stony Brook | Building | 1966 |
| New Suffolk School | New Suffolk | Building | 2002 |
| North Main Street Historic District | Southampton | District | 1986 |
| North Main Street Historic District | East Hampton | District | 1988 |
| Northport Public Library | Northport | Building | 1996 |
| Northport Veterans Administration Hospital Historic District | Northport | District | 2012 |
| O'Donohue, C. A., House | Huntington | Building | 1985 |
| Oakley, John, House | West Hills | Building | 1985 |
| Ockers, Jacob, House | Oakdale | Building | 1992 |
| Oheka | Cold Springs Hills | Building | 2004 |
| Old Bethel Cemetery | Stony Brook | Site | 2017 |
| Old Field Club and Farm | East Setauket | District | 2016 |
| Old Field Point Light Station | Setauket | Building | 2024 |
| Old First Church | Huntington | Building | 1985 |
| Old House, The NHL | Cutchogue | Building | 1966 |
| Old Town Green Historic District | Huntington | District | 1985 |
| Old Town Hall Historic District | Huntington | District | 1985 |
| Orient Historic District | Orient | District | 1976 |
| Orient Point Light Station | Orient | Building | 2007 |
| Pantigo Road Historic District | East Hampton | District | 1988 |
| Parsons, Ambrose, House | Springs | Building | 1995 |
| Phyfe, James W. and Anne Smith, Estate | Nissequogue | District | 1993 |
| Pleasants House | Amagansett | Building | 1984 |
| Plum Island Light Station | Orient Point | Building | 2011 |
| Point OWoods Historic District | Point OWoods | District | 2021 |
| Pollock, Jackson, House and Studio NHL | East Hampton | Building | 1994 |
| Port Jefferson Village Historic District | Port Jefferson | District | 2005 |
| Potter-Williams House | Huntington | Building | 1985 |
| Prime House | Huntington | Building | 1985 |
| Prime-Octagon House | Huntington | Building | 1985 |
| Prince, Henry W., Building | Southold | Building | 2005 |
| Priscilla (Long Island Sound Oyster Sloop) NHL | West Sayville | Structure | 2006 |
| Quogue Cemetery | Quogue | Site | 2013 |
| Quogue Historic District | Quogue | District | 2016 |
| Quogue Life-Saving Station | Quogue | Building | 1999 |
| Race Rock Light Station | Fishers Island | Building | 2005 |
| Rassapeague | Nissequogue | Building | 1993 |
| Remp, Michael, House | Greenlawn | Building | 1985 |
| Riverhead Main Street Historic District | Riverhead | District | 2012 |
| Rogers House | Huntington | Building | 1985 |
| Rogers Mansion Museum Complex | Southampton | Building | 2012 |
| Rogers, John, House | Huntington | Building | 1985 |
| Rogers, Nathaniel, House | Bridgehampton | Building | 2005 |
| Roosevelt, John Ellis, Estate | Sayville | Building | 1987 |
| Rosemary Lodge | Southampton | Building | 2000 |
| Rudolph Oyster House NHL | West Sayville | Building | 2001 |
| Ryan, William J., Estate | Nissequogue | District | 1993 |
| Sag Harbor Hills, Azurest, and Ninevah Beach Subdivisions Historic District | Sag Harbor | District | 2019 |
| Sag Harbor Village District | Sag Harbor | District | 1973 |
| Sag Harbor Village District (Boundary Increase) | Sag Harbor | District | 1994 |
| Sagaponack Historic District | Southampton | District | 2000 |
| Sagtikos Manor | West Bay Shore | Building | 1976 |
| Saint Ann's Episcopal Church | Sayville | Building | 2010 |
| Saint James District | Saint James | District | 1973 |
| Saint Thomas' Chapel | East Hampton | Building | 1997 |
| Sammis, Silas, House | Huntington | Building | 1985 |
| Sayville Congregational Church | Sayville | Building | 2005 |
| Seaman Farm | Dix Hills | Building | 1985 |
| Second and Ostrander Historic District | Riverhead | District | 2017 |
| Setauket Presbyterian Church and Burial Ground | Brookhaven | Building | 1996 |
| Shelter Island Country Club | Shelter Island | Site | 2009 |
| Shelter Island Heights Historic District | Shelter Island Heights | District | 1993 |
| Shelter Island Windmill | Shelter Island | Building | 1978 |
| Sherrill, Stephen, House | East Hampton | Building | 1996 |
| Sherwood-Jayne House | East Setauket | Building | 2009 |
| Shinnecock Hills Golf Club | Southampton | Building | 2000 |
| Shore Cottage | Head of the Harbor | District | 1993 |
| Shore Road Historic District | Cold Spring Harbor | District | 1985 |
| Sisters of St. Dominic Motherhouse Complex | North Amityville | District | 2007 |
| Sisters of St. Joseph Motherhouse, Brentwood | Brentwood | District | 2018 |
| Smith Estate | Brookhaven | Building | 1981 |
| Smith-Ransome Japanese Bridge | Shelter Island | Structure | 2018 |
| Smith-Rourke House | East Patchogue | Building | 1989 |
| Smith-Taylor Cabin | Shelter Island | Building | 2007 |
| Smith, Daniel, House | Huntington | Building | 1985 |
| Smith, Frank W., House | Amityville | Building | 2010 |
| Smith, Henry, Farmstead | Huntington Station | Building | 1985 |
| Smith, Jacob, House | West Hills | Building | 1985 |
| Smith, Obadiah, House | Smithtown | Building | 1996 |
| Southampton Village Historic District | Southampton | District | 1988 |
| Southampton Village Historic District (Boundary Increase) | Southampton | District | 1993 |
| Southold Historic District | Southold | District | 1997 |
| Southold Milestone 7 | Laurel | Object | 2017 |
| Southside Sportsmens Club District | Great River | District | 1973 |
| Squires, Ellis Jr., House | Hampton Bays | Building | 2017 |
| St. Andrew's Episcopal Church | Yaphank | Building | 1988 |
| St. James Chapel | Brookhaven | Building | 2000 |
| St. James Firehouse | St. James | Building | 2023 |
| St. Johns Episcopal Church and Cemetery | Oakdale | Building | 1994 |
| St. Paul's Episcopal Church Complex | Patchogue | Building | 1995 |
| St. Pauls Methodist Episcopal Church | Northport | Building | 2021 |
| Stony Brook Grist Mill | Stony Brook | Building | 1990 |
| Strong, Thomas, House | Wainscott | Building | 2005 |
| Suffolk County Almshouse Barn | Yaphank | Building | 1986 |
| Suffolk County Historical Society Building | Riverhead | Building | 1994 |
| Suydam House | Centerport | Building | 1988 |
| Swan River Schoolhouse | East Patchogue | Building | 2017 |
| Sweet Hollow Presbyterian Church Parsonage | Huntington | Building | 1985 |
| Sylvester Manor | Shelter Island | District | 2015 |
| Terry-Ketcham Inn | Center Moriches | Building | 1993 |
| Terry-Mulford House | Orient | Building | 1984 |
| Thatch Meadow Farm | Head of the Harbor | District | 2020 |
| Thompson House | Setauket | Building | 1988 |
| Titus-Bunce House | Cold Spring Harbor | Building | 1985 |
| Town Doctors' House and Site | Southold | Building | 2005 |
| Townsend, Henry, House | Huntington | Building | 1985 |
| Tuthill-Lapham House | Wading River | Building | 2009 |
| Tuthill, Daniel and Henry P., Farm | Jamesport | District | 2015 |
| Tuthill, David, Farmstead | Cutchogue | Building | 1984 |
| Tuthill, Jesse and Ira, House | Mattituck | Building | 2006 |
| Union Chapel | Shelter Island Heights | Building | 1984 |
| Union Savings Bank | Patchogue | Building | 2010 |
| United Methodist Church | Patchogue | Building | 1984 |
| US Post Office-Bay Shore | Bay Shore | Building | 1988 |
| US Post Office-Northport | Northport | Building | 1989 |
| US Post Office-Patchogue | Patchogue | Building | 1989 |
| US Post Office-Riverhead | Riverhead | Building | 1989 |
| US Post Office-Westhampton Beach | Westhampton Beach | Building | 1989 |
| USS SAN DIEGO (Armored Cruiser) Shipwreck Site | Fire Island | Site | 1998 |
| Vail-Leavitt Music Hall | Riverhead | Building | 1983 |
| Van Iderstine, Charles, Mansion | Huntington | Building | 1985 |
| Van Scoy Burying Ground | Northwest Harbor | Site | 2023 |
| Van Wyck-Lefferts Tide Mill | Lloyd Harbor | Building | 1978 |
| Velzer, N., House and Caretaker's Cottage | Centerport | Building | 1985 |
| Village of Branch Historic District | Branch | District | 1986 |
| Wading River Radio Station | Wading River | Building | 2018 |
| Wainscott Windmill | East Hampton | Building | 1978 |
| Wardenclyffe Laboratory | Shoreham | District | 2018 |
| Water Mill | Water Mill | Building | 1983 |
| Weeks, Charles M., House | Huntington | Building | 1985 |
| Wells, Joshua, House | Cutchogue | Building | 2002 |
| Wereholme | Islip | Building | 2007 |
| West Neck Road Historic District | Huntington | Building | 1985 |
| Wetherill, Kate Annette, Estate | Head of the Harbor | District | 1993 |
| Whitman-Place House | West Hills | Building | 1985 |
| Whitman, Joseph, House | West Hills | Building | 1985 |
| Whitman, Walt, House | West Hills | Building | 1985 |
| Wickapogue Road Historic District | Southampton | District | 1986 |
| Wiggins-Rolph House | Huntington | Building | 1985 |
| Williams, Henry, House | Huntington | Building | 1985 |
| Windmill at Water Mill | Southampton | Building | 1978 |
| Winganhauppauge | Islip | Building | 2010 |
| Wood, Harry, House | Huntington | Building | 1985 |
| Wood, John, House | Huntington Station | Building | 1985 |
| Wood, Joseph, House | Sayville | Building | 2003 |
| Wood, William Wooden, House | Huntington | Building | 1985 |
| Woodcrest | Nissequogue | District | 1993 |
| Woodhull, Benjamin King, House | Wading River | Building | 2008 |
| Woodhull, Charles, House | Huntington | Building | 1985 |
| Woodhull, Josiah, House | Shoreham | Building | 2011 |
| Wyandanch Club Historic District | Smithtown | District | 1990 |
| York Hall | Kings Park | Building | 2023 |
State Historic Preservation Office
Nominations, tax-credit certifications and official records for New York go through the New York State Historic Preservation Office. See how to nominate a property.