200 Greenwich Street is the address for a new office building to be erected as part of the World Trade Center reconstruction in New York City. The building has also been referred to as World Trade Center Tower 2 and will be on the east side of Greenwich Street, across the street from the original location of the twin towers that were destroyed during the September 11, 2001 attacks.

The 79-story building was designed by Foster and Partners, London. The building will have a height of 1,270 feet (387 m), with a tripod shaped antenna that allows the building to reach a total height of 1,350 feet (411 m). In comparison, the Empire State Building's roof is 1,250 feet (381 m) tall, and the original 2 World Trade Center (often referred to as the "South Tower") was 1,362 feet (415 m). The structural engineer for the building is WSP Cantor Seinuk, New York City.

Once built it will be the second tallest skyscraper on the World Trade Center (WTC) site and in New York City, topping the Empire State Building. The sloping roof consisting of four diamonds inclined towards the memorial to provide a visual marker around the skyline of just where the original towers were. The tower is designed to resemble a cross with indentations breaking up the sides.

The total floor space of 200 Greenwich Street is anticipated to include 2.4 million square feet (220,000 square metres) of office space and another 130,000 square feet (12,000 square metres) for retail shops and access areas to the underground PATH railway. Excavation for the new building is expected to commence in 2007 and the building will be completed by 2011.