Examples of web sites made with Drupal (information collected from Dries Buytaert blog and other sources):

• Government Institutions:
  
• U.S.A. White House, in the news #1, in the news #2 & old site 2007
• U.S.A. Department of Commerce
• U.S.A. Spending Dashboard, news on U.S. Military issues new open-source guidance
• U.S.A. New York State Senate & showcase
• French Government Portal
• New Zealand Government Beehive
  
• Prime Minister of Australia
• Prime Minister of Belgium
• Invest in Belgium
  
• Dutch State Service for Cultural Heritage
• Global Museum on Communism
• Where it's at NYC
  
• data.gov.uk
• innovate.direct.gov.uk
• Christian Democratic and Flemish (CD&V)
  
• City of London
  
• City of Athens
• City of Jacksonville
  
• Schools and Universities:
• M.I.T. University - Media Lab
• M.I.T. University - Computer Science and Artificial Intelligence Laboratory (CSAIL)
  
• Harvard University - Berkman Center for Internet and Society
• Harvard University - Science and Engineering Department
• Harvard University - Institute for Quantitative Social Science
• Harvard University - Initiative in Innovative Computing
• Harvard University - Magazine
  
• Stanford University - Humanities Center
• Portland State University
• Rutgers State University (New Jersey)
  
• Duke University
• Strayer University
• University of Prince Edward Island (UPEI) (over 300 sites)
• University of Calgary
• Université de Moncton
• Universiteit Gent
  
• Antwerp Studentenstad (Student Organization)
  
• Escolas de Turismo de Portugal
• Humanitarian Institutions:
  
• World Bank
• Wold Food Programme (WFP)
• Human Rights Watch (HRW)
• Amnesty International
  
• Stand Up Against Poverty by United Nations
• End Poverty 2015
• Children in Crisis
• Koala Foundation
  
• Kofi Annan Foundation
  
• Mercy Corps
• Oxfam International
• Kom op tegen kanker
• Symbian Foundation
• Greenpeace UK
• Electronic Frontier Foundation (EFF)
• Center for Reproductive Rights
  
• Religious Institutions:
• One Difference
• Global Oneness Project
• Faith Comes by Hearing
• Christian Berets
• Massachusetts Bible Society
  
• Worship Central
• News, Magazine & Television Agencies:
  
• World Association of Newspapers and News Publishers (WAN-IFRA)
  
• Reuteurs Labs
• Edipresse
• France24, news example, showcase, published modules
• Le Figaro
• Slate.fr
• Radio Télévision Belge Francophone (RTBF)
• Radio Netherlands Worldwide (RNW)
• MTV UK
  
• BBC - Music Magazine
• BBC - Countryfile Magazine
• BBC - Focus Magazine
• BBC - Who Do You Think You Are Magazine
• BBC - History Magazine
• BBC - Home And Antiques
• CNN - Go (Asian beta)
• ABC - Dig Music
• ABC - Country
• ABC - Jazz
• ABC - Family by Walt Disney
• Fox - Search Spotlight
  
• Virgin 999 Radio
• MNM
  
• N-VA
• Eén
• VT4
• Studio Brussel
  
• 24heures
• Forbes Russia
• Mother Jones
• The World
  
• NowPublic
  
• Business Spotlight
• InfoWorld
• Popular Science
• Adds of the World
• The Onion
• Shock
  
• Ask a Ninja
  
• myLifetime
  
• Femina Maganize
• Playboy Germany
  
• P-Magazine
• Multimedia Enterprises and Institutions:
• Grammy Awards
• Emmy Awards
  
• Monty Python
• Warner Bros. Records (WBR)
• Universal Music
• Sony BMG - MyPlay
  
• NMC
• Games and Entertainment:
• Gamezebo
• 9Lives
• Second Life
  
• Battlefield 1943
• Battlefield Heroes
  
• StarWars: The Old Republic
• Rock Band
  
• Information Technologies (IT):
• Internet Systems Consortium (ISC)
• Internet Committee for Assigned Names and Numbers (ICANN) - Meetings
  
• Google - Measurement Lab
• Yahoo - Research
• Yahoo - Style Guide
• AT&T - Apps Beta
• Novell - Communities
  
• AOL - Corporation
• AOL - Developer Network
  
• Nokia - Research Center
  
• Sony Ericsson - Labs
• Sony Playstation - Asia
  
• Sanyo - Australia
• Intel - AppUp Developer Program
• nVidia - Developers
• MacWorld Expo
  
• Adobe - Flex.org
• DivX - Labs
  
• Rackspace - Hosting Support
• SourceForge.com
• Digg - Blog
• Food Industry:
• McDonalds Australia
• Leffe
• Fabrica de Licores de Antioquia
• Sports Enterprises:
  
• Alliance of Action Sports (ALLI)
  
• 2010 FIFA World Cup South Africa
• MotoGP
  
• Other Enterprises:
• General Motors Expo 2010
• VIA Rail Canada
• FedEx - News
  
• Randstad
• Ahold
• FastCompany
  
• Consumer Search
• Mattel
• Total Body Care
  
• Capgemini
• Science:
  
• Mensa
• Agenzia Spaziale Italiana (A.S.I.)
• NASA - Academy of Program / Project and Engineering Leadership (APPEL)
• NASA - Mars Odissey - Themis
  
• Personalities:
  
• Barack Obama
• Mike Bloomberg
  
• Rafael Nadal
• Robbie Williams
• Pearl Jam
  
• Eric Clapton
• Bob Dylan
• R.E.M. - Tour
• Moby
  
• Led Zeppelin
• Metallica - Mission Album
• Ozzy Osbourne
  
• Grateful Dead
  
• Pink
• Christina Aguilera
• Jennifer Lopez
  
• Beyonce
• Britney Spears
  
• Avril Lavigne
  
• Michael Jackson
• Flip Kowlier
  
• Francesca Battistelli
  
• John Travolta Movies
• e-Commerce Sites:
• Zappos
• Best Buy Mobile
• Auction King
• Brico Dépôt>
  
• Mosquito Magnet
• Opensource and Freeware:
  
• Open Source Initiative (OSI)
  
• Opensource.com
• Opensource Software OStatic
• Free and OpenSource Software Developers Meeting (FOSSDEM)
  
• Linux Foundation - Developer Network
  
• Linux Journal
• Ubuntu
  
• Drupal.com
  
• Drupal.org
• Jabber.org
• Eclipse - Live
  
• Spread Firefox
  
• Spread Thunderbird
• OpenOffice.org Extensions
  
• Other sites:
• Royal Flemish Philharmonic
• Niagara Falls Fun
• PitBulls.org