Athenaeum or atheneum may refer to:
Books and periodicals
Athenaeum (German magazine), a journal of German Romanticism, established 1798
The Athenaeum (British magazine), a weekly London literary magazine 1828–1921
The Athenaeum (Acadia University), a student newspaper of Acadia University, Nova Scotia
The Daily Athenaeum, the newspaper of West Virginia University
The Athenaeum (novel), a novel by Raul Pompéia 1888
Atheneum Books, a New York publisher, now an imprint of Simon & Schuster
Athenaeum Press, the Cambridge, Massachusetts, building where Ginn and Company printed books
Clubs and societies
Marian Miner Cook Athenaeum, Claremont McKenna College, Claremont, California, US
Liverpool Athenaeum, Liverpool, UK
Athenaeum Club, London, UK
German Athenaeum, London, UK
Ateneo de Madrid, Spain
Manchester Athenaeum, Manchester, UK
Athenaeum Club, Melbourne, Australia
Athenaeum at Caltech, California Institute of Technology, Pasadena, California, US
The Plymouth Athenaeum, Plymouth, UK
Ateneo de Sevilla, Spain
Cultural centers
Athenæum (Das Deutsche Haus), Indianapolis, Indiana, US
Ateneu Alguerès, Alghero, Sardinia, Italy
The Athenaeum (Camden Road), London
The Athenaeum (South Africa), Port Elizabeth, South Africa
Boston Athenaeum, Boston, Massachusetts, US
Caracas Athenaeum, Caracas, Venezuela
Mexican Youth Athenaeum, Mexico City, Mexico
New Harmony's Atheneum, New Harmony, Indiana, US
Puerto Rican Athenaeum, the English name for Ateneo Puertorriqueño, Puerta de Tierra, Puerto Rico
Iași Athenaeum, Iași, Romania
Hotels
The Athenaeum Hotel, Piccadilly, London, UK
Athenaeum Hotel at the Chautauqua Institution, New York, US
Libraries
Athenaeum Music & Arts Library, La Jolla, California, US
Athenaeum of Philadelphia, Philadelphia, Pennsylvania, US
Berkshire Athenaeum, Pittsfield, Massachusetts, US
Boston Athenæum, Boston, Massachusetts, US
Dunedin Athenaeum and Mechanics' Institute, Dunedin, Otago, NZ
Folio: The Seattle Athenaeum, Seattle, Washington, US
Melbourne Athenaeum, Melbourne, Australia
Minneapolis Athenæum, the name of the first library in Minneapolis, Minnesota, US
Portsmouth Athenæum, Portsmouth, New Hampshire, US
Providence Athenaeum, Providence, Rhode Island, US
Redwood Library and Athenaeum, Newport, Rhode Island, US
Salem Athenaeum, Salem, Massachusetts, US
St. Johnsbury Athenaeum, St. Johnsbury, Vermont, US
Westfield Athenaeum, Westfield, Massachusetts
Museums
Athenaeum (Alexandria, Virginia), Alexandria, Virginia, US
Chicago Athenaeum, Chicago, Illinois
Portsmouth Athenæum, Portsmouth, New Hampshire, US
Wadsworth Atheneum, Hartford, Connecticut, US
Wilcannia Athenaeum, Wilcannia, New South Wales, Australia
Schools
Europe
Athenaeum (ancient Rome), a school founded by Emperor Hadrian
Athenaeum Illustre of Amsterdam, Amsterdam, the Netherlands
Athenaeum illustre, a late name for the University of Franeker (1585-1811)