If you're referring to New York State, then the answer is Long Island.
If you're referring to New York City, then I believe the answer you're looking for is also Long Island. However, the question would perhaps have been better worded as: "What is the name of the large island that part of New York City is situated on?"
At 1400 square miles (3626 sq km), Long Island is the largest island in the continental United States. The entire island is part of New York State. Two of New York City's five boroughs (Brooklyn and Queens, aka Kings County and Queens County) occupy the western end of Long Island. The remainder of the island consists of Nassau and Suffolk Counties, which are part of New York State but not New York City.
So the entire island is not part of New York City. Only the western end (the part that Brooklyn and Queens are situated on) is part of New York City.
The borough of Manhattan and the borough of Staten Island are the only two islands that are entirely within the boundaries of New York City (not counting all the small to miniscule islands dotted around the waterways that surround the city). But Manhattan Island and Staten Island can hardly be called "large" islands. Manhattan is only about 34 square miles (88 sq km) in total area, and Staten Island is a little over 100 square miles (259 sq km).
The remaining borough -- The Bronx -- is attached to the mainland United States. It is the only New York City borough that is not an island or part of an island.
LONG Island, NY is The
Both the longest[3] and the largest island in the contiguous United States, Long Island extends 118 miles (190 km) eastward from New York Harbor to Montauk Point, and has a maximum north-to-south expanse of 23 miles (37 km) between the northern Long Island Sound coast and the southern Atlantic coast.[4] With a land area of 1,401 square miles (3,629 km2), Long Island is the 11th largest island in the United States and the 148th largest island in the world -
larger than the 1,214 square miles (3,140 km2) of the smallest state, Rhode Island.[5]
Long Island.
Long Island
Long Island
Brooklyn along with Queens is attached physically to Long Island thus making it part of a large island.
Long Island is an island in New York, at 1,377 square miles (3567 km
corsica
GREENLAND
Java is a large island that is part of Indonesia.
There are around 70 islands in the waters surrounding New York City. The better known are Manhattan and Staten Island, but there are also Islands like Ellis Island, Liberty Island, Governors Island and Roosvelt Island to name a few.
The proper name, an island and part of New York City, is spelled Manhattan.
New York City. Two of New York City's five boroughs -- Brooklyn and Queens --occupy the western end of Long Island. The other three boroughs are Manhattan, Staten Island and the Bronx. Manhattan and Staten Island are each islands, and the Bronx is the only New York City borough that is not an island or part of an island, but is attached to the mainland of New York State.
New York City, Mahattan Is a Island, Brooklyn is part of Long Island,as is Queens and let's not forget the best Staten Island
If you are thinking of Greenland, it is still part of Denmark.
Corsica (in French: la Corse)