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- National Design Awards
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- National Gallery of Art
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- National Historic Site
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- Navy – Merchant Marine Memorial
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- Opposition to the Iraq War
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- Presidency of Ronald Reagan
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- Renwick Gallery
- Reproductive endocrinology and infertility
- Republican Party
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- Robert Venturi
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- Roy Rosenzweig Center for History and New Media
- Ruby slippers
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- Schar school of policy and government
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- Silver Spring, Maryland
- Sinclair Oil Corporation
- Sleeping Bear Dunes National Lakeshore
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- Southwest, Washington, D.C.
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- Spider-Man: Homecoming
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- Steven F. Udvar-Hazy Center
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- Susanna Boylston
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- Tariff of 1832
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- The atlantic
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- Title 40 of the United States Code
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