Mariners Harbor is a neighborhood located in the northwestern part of New York City, USA's borough of Staten Island. It is bordered by Morningstar Road to the west, Forest Avenue to the south, Richmond Terrace to the north, and Holland Avenue to the west. The northwest quadrant of Mariners' Harbor, bounded by Arlington Place, Holland Avenue, Richmond Terrace, and South Avenue is sometimes known as Arlington.

The neighborhood owes its name to the fact that, during the 19th century, oysters and other seafood products were harvested the Kill Van Kull, which forms the neighborhood's northern border (Elm Park and Port Ivory lie to the east and west, respectively, while Graniteville is to the south). This activity declined due to pollution during the 20th century. But today oysters are farmed by various small fishing entities and are cleaned in the waters off Long Island by allowing them to bed in those waters. Today the Mariners Harbor Yacht Club remains as a reminder of the community's maritime past.

One of the stations on the North Shore branch of the Staten Island Railway was both located in and named after the neighborhood, within which was also found three other stations along the line, at Lake Avenue, Harbor Road, and Arlington (passenger service on this line was discontinued in 1953). The railroad bed has been rebuilt and is now used by freight trains traveling between New Jersey and the Howland Hook Marine Terminal in the bordering Arlington area.

The area originally populated by the Dutch settlers of 1600s and 1700s bears the famous names of those families, which include: Van Name Street, Van Pelt Avenue, Brabrant Street, Lockman Avenue and Mesereau Avenue. The oldest church in the neighborhood is the methodist Summerfield church, founded in 1840 it still stands on Harbor Road. On the corner of Richmond Terrace and Lockman Avenue is the Faith Baptist Church, which has a large African American congregation and has gained considerable political influence being visit by New York City mayors David Dinkins, Rudolph Giuliani, and Michael Bloomberg on multiple occasions during their terms of office. From the early 1900s to the 1930s the area became home to many Italian-Americans, who still comprise a significant percentage of its population. The neighborhood was permanently transformed, however, in 1954, when the New York City Housing Authority opened the 605-unit Mariner's Harbor Houses public housing project in the heart of the community, which then soon became predominantly African American and later, also Hispanic.

Mariners Harbor was home to large shipping and dry dock companies in the first half of the 20th century, including Bethlehem Steel, which owned a considerable portion of land in the area with headquarters along the waterfront on Richmond Terrace across from Messereau Avenue and Brewers Dry Dock. Bethlehem Steel built military transports during World War I and World War II. Currently, two tugboat companies—K-Sea and McAllister—operate in the area as do a number of smaller dry docks, Great Lakes Dredge and Dock, and Mariners Harbor Cargo Terminal. The West Shore Little League and Public School 44 also are part of the neighborhood. The former Cross Paper Plant sits on the edge of the area and now is used as rental space for other small business. In recent years a large amount of shopping has been built up in stretch of Forest Avenue from Lake Avenue to South Avenue revitalizing the area and bringing new traffic concerns.

The ZIP Code for Mariners Harbor is 10303.

Most students in Mariners' Habor are zoned for Port Richmond High School, I.S.51, and P.S.22 and P.S.44, as well as a section north of Brabant Street and west of Van Pelt Avenue that is zoned for I.S 72 in Heartland Village (Source: http://maps.nycboe.net) NYC Department of Education website. In 2008, it was announced that Mariners Harbor would get its own branch of the New York Public Library, on a vacant lot along South Avenue. It will be the thirteenth branch on Staten Island. The library was the winner of the Award for Excellence in Design from New York City's Public Design Commission. Construction is scheduled to begin in 2009 and the library is expected to open in 2011.

Mariners Harbor is served by the S40/S90 buses along Richmond Terrace and South Avenue, the S48/S98 buses along Forest Avenue and South Avenue, and the S46/S96 buses along Grandview Avenue/South Avenue and Brabrant Street. It is also served by the X12/X42 and X30 express buses to Manhattan along Forest Avenue.

Annadale  Arden Heights  Arrochar  Bay Terrace  Bloomfield  Brighton Heights  Bulls Head  Castleton  Castleton Corners  Charleston  Clifton  Concord  Dongan Hills  East Shore  Egbertville  Elm Park  Eltingville  Emerson Hill  Farm Colony  Fort Wadsworth  Fresh Kills  Graniteville  Grant City  Grasmere  Great Kills  Greenridge  Grymes Hill  Hamilton Park  Heartland Village  Hoffman Island  Howland Hook  Huguenot  Isle of Meadows  Lighthouse Hill  Livingston  Manor Heights  Mariners Harbor  Meiers Corners  Mid-Island  Midland Beach  New Brighton  New Dorp  New Dorp Beach  New Springville  North Shore  Oakwood  Ocean Breeze  Old Town  Pleasant Plains  Port Ivory  Port Richmond  Prall's Island  Prince's Bay  Randall Manor  Richmondtown  Richmond Valley  Rosebank  Rossville  St. George  Sandy Ground  Shooters Island  Shore Acres  Silver Lake  Snug Harbor  South Beach  South Shore  Spanish Camp  Stapleton  Stapleton Heights  Sunnyside  Swinburne Island  Todt Hill  Tompkinsville  Tottenville  Tottenville Beach  Travis  Ward Hill  Westerleigh  West New Brighton  West Shore  Willowbrook  Woodrow

Annadale - Arden Heights - Arrochar - Bay Terrace - Bloomfield - Bulls Head - Castleton Corners - Charleston - Chelsea - Clifton - Concord - Dongan Hills - Egbertville - Elm Park - Eltingville - Emerson Hill - Fort Wadsworth - Graniteville - Grant City - Grasmere - Great Kills - Greenridge - Grymes Hill - Heartland Village - Huguenot - Lighthouse Hill - Livingston - Manor Heights - Mariners Harbor - Meiers Corners - Midland Beach - New Brighton - New Dorp - New Springville - Oakwood - Ocean Breeze - Old Town - Pleasant Plains - Port Richmond - Prince's Bay - Randall Manor - Richmondtown - Richmond Valley - Rosebank - Rossville - Rudolph Lake - Sandy Ground - Shore Acres - Silver Lake - South Beach - Stapleton - Stapleton Heights - St. George - Sunnyside - Todt Hill - Tompkinsville - Tottenville - Tottenville Beach - Travis - Ward Hill - Westerleigh - West New Brighton - Willowbrook - Woodland Beach - Woodrow -