Forbidden

• Forbidden mechanism, a spectral line associated with absorption or emission of photons

• Forbidden (1919 film), directed by Phillips Smalley and Lois Weber
• Forbidden (1932 film), directed by Frank Capra
• Forbidden (1949 film), directed by George King
• Forbidden (1953 film), directed by Rudolph Maté
• Forbidden (Proibito), a 1954 Italian film directed by Mario Monicelli
• Forbidden (1984 film), directed by Anthony Page
• The Forbidden, a 2018 Uganda film

• Forbidden (Cooney novel), a 1994 novel by Caroline B. Cooney
• Forbidden (Dekker and Lee novel), 2011 novel by Ted Dekker and Tosca Lee
• Forbidden, a 2010 novel by Tabitha Suzuma
• "The Forbidden", short story by Clive Barker, from the Books of Blood

• Forbidden (band), an American thrash metal band
• Forbidden (Black Sabbath album) (1995), also the title track
• Forbidden (Todrick Hall album) (2018), also the title track
• "Forbidden", a 2022 song by Chris Brown from Breezy

• Social norm, shared standards of acceptable behavior by groups
• Forbidden Technologies plc, a UK company
• "ForBiddeN", nickname of model-stylist Christine Dolce
• Forbidden Peak, in the North Cascades mountains, Washington state, United States
• HTTP 403, access denied error code, one of the HTTP stutes code

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