• Cid (Final Fantasy), a series of fictional characters in the Final Fantasy series of computer role-playing games
• Cid Corman
  Cid Corman
  Cid Corman was an American poet, translator and editor, most notably of Origin, who was a key figure in the history of American poetry in the second half of the 20th century.-Early life and writing:...
  
  , a poet
• Cid, a slang term for Lysergic acid diethylamide (LSD)
• Content-ID, a URI scheme
  URI scheme
  In the field of computer networking, a URI scheme is the top level of the Uniform Resource Identifier naming structure. All URIs and absolute URI references are formed with a scheme name, followed by a colon character , and the remainder of the URI called the scheme-specific part...
  
   (cid:) that allows the use of MIME within email
• Customer Induced Damage, usually negating Manufacturer's Warranty
  Warranty
  In business and legal transactions, a warranty is an assurance by one party to the other party that specific facts or conditions are true or will happen; the other party is permitted to rely on that assurance and seek some type of remedy if it is not true or followed.In real estate transactions, a...
  
  

See also

• CID (disambiguation)
• El Cid (disambiguation)
  El Cid (disambiguation)
  El Cid can refer to:*Rodrigo Diaz de Vivar, known as El Cid, a medieval Spanish heroOr to the following depictions of his story:*The Lay of the Cid, a medieval Spanish epic poem*Le Cid, a tragicomedy written by Pierre Corneille...
  
  
• Sid (disambiguation)
  Šid (disambiguation)
  Šid can refer to:* Šid, town and municipality in Serbia* Šid, Lučenec, village in Slovakia...