Forbidden may refer to:
Science Forbidden mechanism, a spectral line associated with absorption or emission of photons
Films 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
Literature 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
Music 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
Other uses 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