Zifeng Tower (Greenland Center-Zifeng Tower or Greenland Square Zifeng Tower, formerly Nanjing Greenland Financial Center)[4][5] is a 450-meter (1,480 ft) supertall skyscraper (special class of skyscraper) in Nanjing, Jiangsu.

Floors 49/71 feature a hotel, numerous restaurants, and a public observatory.

The tower's stepping is functional; office, hotel, and retail are located above grade, while the restaurants and the public observatory are housed at the top of the tower.

Architectural firm Skidmore, Owings and Merrill designed the building, led by Adrian Smith.

The Nanjing Greenland InterContinental Hotel is located within the tower.