The Citadel is a public military college in Charleston, South Carolina.

The Citadel may also refer to:

• The Citadel (1938 film), based on the Cronin novel
• The Citadel (1960 film), a 1960 American television film adaptation
• The Citadel (1960 TV series), a 1960 British serial adaptation of the Cronin novel
• The Citadel (1983 TV series), a 1983 British serial adaptation for the BBC
• The Citadel (2003 miniseries) or La Cittadella, an Italian adaptation
• La Cittadella (1964 miniseries), a 1964 Italian adaptation of The Citadel
• "The Citadel" (Star Wars: The Clone Wars)
• Citadel (TV series), a 2023 American spy action series starring Richard Madden and Priyanka Chopra made by Amazon.

• The Citadel (novel), a 1937 novel by A. J. Cronin
• The Citadel, a novel by Peter Aleshkovsky
• The Citadel, a Dragonlance novel by Richard A. Knaak, in the Classics Series

• The Citadel, a Combine headquarters on Earth's City 17 in the game Half-Life 2
• The Citadel (Mass Effect), an immense space station and the heart of galactic civilization in the Mass Effect game series
• The Citadel, the headquarters of the Brotherhood of Steel in the ruins of the Pentagon in Fallout 3

• The Citadel (Arizona), an archaeological site at the Wupatki National Monument
• The Citadel (mountain), a mountain in South West Tasmania
• The Citadel (Sierra Nevada), a mountain summit in California

• Royal Citadel, Plymouth, regularly referred to as "The Citadel"
• Citadel of Aleppo, a palace in Aleppo, Syria
• The Citadel (mall), a shopping mall in Colorado, United States
• Citadel Outlets, an outlet mall in City of Commerce, Los Angeles County, California
• The Citadel, one of the tallest buildings in Dubai
• The Citadel, the Vietnamese royal residence at Hué
• The Citadel, 17th century artillery fort, Kingston upon Hull, UK
• Citadel Arts Centre, in St Helens, Merseyside now referred to as "The Citadel Arts Centre"
• Kastellet, Copenhagen, also called the Citadel, a 17th-century citadel in Copenhagen, Denmark

• The Citadel Bulldogs, the athletic programs of The Citadel college

• Citadel (disambiguation)
• Citadella, fortress on Gellért Hill, Budapest, Hungary
• Citadelle (disambiguation)
• Cittadella (disambiguation)
• Royal Citadel (disambiguation)
• Tower of David

This disambiguation page lists articles associated with the title The Citadel.
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