Red can refer to:

• Red, a color
• Red (film)
• Red (album)
• R.E.D. can stand for Real Estate Development .
• A slang term for a communist
• The Red code, the U.S. codename for a Japanese code used by the Imperial Japanese Navy prior to World War II. Not to be confused with:
  • RED , the U.S. codename for a Japanese cipher machine used for diplomatic traffic, in service just prior to World War II.
• In BDSM, Red is considered the universal Safeword