620 Park Avenue is a luxury apartment building on the Upper East Side of Manhattan on Park Avenue between East 65th and 66th Streets.

620 Park Avenue was designed by J.E.R. Carpenter, who also designed 625 Park Avenue across the avenue; and constructed by Starrett Brothers construction in 1924. It features a limestone facade on the two lowest floors and a brick exterior for the upper 13 floors. It is a 15-story building featuring just 15 units each composed of a full floor. In recent years, it has become known for its conservative and often exclusionary co-op board and is known to avoid famous or notorious residents.

• Dr. Paul Marks - former head of Sloan-Kettering^[1]

In the 1999 American film Being John Malkovich, 620 Park Avenue is featured as the home of John Malkovich.^{[citation needed]}

• Jim Naureckas. "New York Songlines: 4th Avenue With Park Avenue and The Bowery". nysonglines.com. Retrieved January 19, 2014.

40°46′01″N 73°58′02″W / 40.76694°N 73.96722°W / 40.76694; -73.96722