R13

R13 or R-XIII may refer to:

Aviation

 * Fouga CM.8 R13 Cyclone, a French sailplane
 * Lublin R-XIII, a Polish army-cooperation plane
 * Tumansky R-13, a Soviet turbojet engine

Roads

 * Jalan Gua Kelam, in Malaysia
 * R-13 regional road (Montenegro)

Other uses

 * R13 (drug), an antidementia agent
 * R-13 (missile), a Soviet missile system
 * R13 (Rodalies de Catalunya), a regional rail line in Catalonia, Spain
 * Chlorotrifluoromethane, a refrigerant
 * Nyaneka language
 * R13: Extremely flammable liquefied gas, a risk phrase
 * Rebellion R13, a prototype racing car
 * ROT13, a simple cipher
 * USS R-13 (SS-90), a submarine of the United States Navy
 * R 13, a Buffet Crampon clarinet model