Robert F. Wagner Jr. Park (also known as Wagner Park) is a green space in the Battery Park City neighborhood of Manhattan, New York City. The park is sited on landfill from the World Trade Center site and opened in 1996. It was designed by a partnership of Rodolfo Machado, Jorge Silvetti, Hannah/Olin, and Lynden B. Miller. The park is named after Robert F. Wagner Jr., who helped negotiate the 1979 master plan for Battery Park City before his sudden death in 1991. The park is just north of City Pier A at the southern end of Manhattan.

In 2022, the Battery Park City Authority announced plans to demolish and rebuild the park; the demolition attracted opposition from local residents. The demolition is slated as part of a flood resiliency project. In response to the public pressure, the Battery Park City Authority enlarged the area dedicated to lawns in the plans, although the rebuilt lawns would still contain 10 percent less green space. As of October 2022, the plans called for removing 48 trees and raising the park's elevation from 11 to 20 feet (3.4 to 6.1 m), where 139 trees would be planted. There would also be gardens and a 63,000-U.S.-gallon (240,000 L) stormwater retention tank. A 19,204-square-foot (1,784.1 m) park pavilion was also built.