In Classical and Neoclassical architecture, a building or room that is circular in plan and covered with a dome. The Pantheon is a Classical Roman rotunda. The Villa Rotonda at Vicenza, designed by Andrea Palladio, is an Italian Renaissance example. The central hall of the U.S. Capitol is an example of the rotunda in its familiar role as part of a monumental public building.

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• Rotunda (architecture), any building with a circular ground plan, often covered by a dome
• Rotunda (script), a specific medieval blackletter script
• Pentagonal rotunda, a polyhedral solid formed from half an icosidodecahedron

Places:

• Rotunda of St. George, built as the "Tomb of Galerius" in Thessaloniki in 306 AD
• Rotunda Hospital, built as the "New Lying-In Hospital" in 1757 in Dublin, Ireland
• Rotunda Museum, museum of geology in Scarborough, North Yorkshire, England.
• The Rotunda (University of Virginia)
• The D'Alemberte Rotunda Florida State University, a structural and architectural pedagogue that is part of FSU's College of Law and center of its Village Green
• Rotunda (Birmingham), built as "The Rotunda" in 1964
• U.S. Capitol Rotunda, in Washington, D.C.
• The Rotunda (Baltimore), a mall located near Johns Hopkins University
• Rotunda, Olt, a commune in Olt County, Romania
• The Rotunda (Woolwich), a John Nash building in Woolwich, London, UK, affiliated to Firepower, the Royal Artillery museum
• The Rotunda at Ranelagh Gardens, London, a now demolished but once fashionable social meeting place and function room

People

• Ronald Rotunda