R18, or R-18, may refer to: Media content ratings R18 (British Board of Film Classification) R18+ issued by the Australian Classification Board R18 issued by the New Zealand Classification Office R18+ issued by Eirin in Japan R-18 issued by the Philippine Movie and Television Review and Classification Board Other uses R18 (drone), a Ukrainian unmanned combat aerial vehicle Audi R18, a Le Mans prototype racing car BMW R18, a cruiser motorcycle made by BMW during the COVID-19 pandemic R18: In use, may form flammable/explosive vapour-air mixture, a risk phrase R18.com, a Japanese English-language adult website created by Hokuto Corporation R-18 regional road (Montenegro) Renault 18, a French automobile Rubik R-18 Kánya, a Hungarian light aircraft , a submarine of the United States Navy See also 18 rating