R18

R18, or R-18, may refer to:

• R18 certificate, a film or video classification given by a number of agencies:
  • the British Board of Film Classification.
  • the Office of Film and Literature Classification (Australia).
  • the Office of Film and Literature Classification (New Zealand).
• R-18, a motion picture rating in Japan and the Philippines.
• R18: In use, may form flammable/explosive vapour-air mixture, a risk phrase in chemistry.
• USS R-18 (SS-95), an R-class coastal and harbor defense submarine of the United States Navy.
• Renault 18, a French automobile.
• R18!, a manga.
• R18A1, the engine found in the 8th Generation USDM Honda Civic.
• Audi R18, a Le Mans prototype racing car