Eastside Park is a residential neighborhood in the Eastside of Paterson, New Jersey. The Eastside Park section of the city is generally defined as the area of the city bordered by Vreeland Avenue and East 33rd Street to the west, 20th Avenue to the south, McLean Boulevard to the east, and Martin Luther King, Jr. Way (Broadway) to the north. The Eastside Park section is delineated from the Manor section of the city by Broadway, which becomes Route 4 before crossing the Passaic River into Elmwood Park in Bergen County.

Paterson is the largest city in and the county seat of Passaic County, in the U.S. state of New Jersey. As of the 2020 United States census, the city was the state's third-most-populous municipality, with a population of 159,732.