Rockcliffe Park is the wealthiest neighbourhood in Ottawa, Ontario, and is one of the most prosperous enclaves in Canada. Until 2001 it was an independent village, but was amalgamated with the rest of the city that year. As of 2001, Rockcliffe Park had a population of 2,028.

The area is northeast of downtown, on the southern banks of the Ottawa River. It encompasses the small MacKay Lake, and the Ottawa Rockery, a rock garden maintained by the National Capital Commission. The largely francophone neighbourhood Vanier area lies to the south.

Rockcliffe Park is home to many Ottawa notables. Stornoway, the residence of the leader of the Canadian Official Opposition is located there. Many ambassadors to Canada also live in Rockcliffe, including the ambassadors of Israel, the United States of America, and the Papal Nuncio. In recent years the neighbourhood has attracted leaders of Ottawa's high tech industry, including Michael Cowpland, former Chief Executive Officer of Corel, who built a large gold-coloured house in the area, much to the consternation of the community.

The area is also home to Ashbury and Elmwood , Ottawa's two most prestigious private schools. Actor Matthew Perry attended the former.

As it was long a separate village not under the jurisdiction of Ottawa's municipal government, Rockcliffe Park differs from the rest of the city. It has very few sidewalks, but is also relatively inaccessible to through traffic. Much of Rockcliffe is still wooded and the houses are set far apart on wide lots.

Average salary in Rockliffe Park is $119,377 whereas the average salary in Ottawa is $53,250.

See also: List of Ottawa neighbourhoods