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Dupont Circle is a traffic circle, park, neighborhood, and historic district in Northwest Washington, D.C. The Dupont Circle neighborhood is bounded approximately by 16th Street NW to the east, 22nd Street NW to the west, M Street NW to the south, and Florida Avenue NW to the north. Much of the neighborhood is listed on the National Register of Historic Places.

Dupont Circle is a station on the Red Line of the Washington Metro in Washington, D.C. Located below the circle of the same name, it is one of the busiest stations in the Metro system, with an average of 16,948 entries each weekday.

The Patterson Mansion (also known as the Patterson House or the Washington Club) is a historic Neoclassical-style mansion located at 15 Dupont Circle NW in Washington, D.C., in the United States. It was built by Robert Wilson Patterson, editor of the Chicago Tribune newspaper, and used by him and his family for entertaining when he was in the city.

Stewart's Castle, also referred to as Castle Stewart or Stewart's Folly, was a mansion in Washington, D.C., located on the north side of Dupont Circle between Connecticut Avenue and Massachusetts Avenue. The house owed its various names to the original owner, Senator William Morris Stewart, the imposing, turreted facade and its prominence in an area considered undesirable at the time of its construction.

The Coalition for Networked Information (CNI) is an organization whose mission is to promote networked information technology as a way to further the advancement of intellectual collaboration and productivity.

The Association of Advanced Rabbinical and Talmudic Schools (AARTS) is a faith-based national accreditation association for Rabbinical and Talmudic schools. It is based in New York, NY and is recognized by the Council for Higher Education Accreditation and United States Department of Education.In the field of Rabbinical and Talmudic education the association sees itself as both a gatekeeper and a historical authority.

The Dupont Circle Hotel is a luxury boutique hotel overlooking Dupont Circle, in Washington, D.C. Before renovations in 2009, it was known as the Jurys Washington Hotel. Prior to that, it was known as the Dupont Plaza Hotel.The Dupont Hotel contains nine floors, bar (Doyle), coffeeshop (Doyle & Co), patio and a restaurant (The Pembroke).

The Sulgrave Club is a private club located at 1801 Massachusetts Avenue, N.W., on Embassy Row in the Dupont Circle neighborhood of Washington D.C., United States.