Stone Harbor is a borough in Cape May County, New Jersey, United States, that is part of the Ocean City Metropolitan Statistical Area. It occupies the southern portion of Seven Mile Island together with its northern neighbor Avalon. It is a resort community for visitors enjoying beaches, sailing facilities and a thriving commercial center. Most vacationers come from New Jersey, Pennsylvania, New York, Connecticut, Maryland, Delaware and Quebec. The borough has a summer population in excess of 20,000, and a year-round population of 866, according to the 2010 United States Census.

The New York Times describes Stone Harbor as a place of "gleaming McMansions and elegant shops", with an average single-family home selling for $2.5 million in 2008. In 2006, Forbes magazine ranked Stone Harbor (ZIP code 08247) as #47 on its list of the most expensive ZIP codes in the United States, based on median home sale prices. As of 2001, Worth magazine ranked Stone Harbor at 101 on its list of the Richest Towns in America, based on median annual real estate prices.