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 Jalan Gua Kelam (Perlis state route R13) is a major road in Perlis, Malaysia. List of junctions See also * Transport in Malaysia Transportation in Malaysia started to develop during British colonial rule, and the country's transport n ...

, in Malaysia *

R-13 regional road (Montenegro) R-13 regional road ( cnr, Regionalni put R-13) is a Montenegrin roadway. Section from Bioče to Mateševo is a parallel road to section of Bar–Boljare motorway that was finished in 2022. When this section of Bar–Boljare motorway was fini ...

Other uses

R13 (drug) R13 is a small-molecule flavonoid and orally active, potent, and selective agonist of the tropomyosin receptor kinase B (TrkB) – the main signaling receptor for the neurotrophin brain-derived neurotrophic factor (BDNF) – which is under ...

, an antidementia agent *

R-13 (missile) The R-13 (russian: ракета-13) was a submarine-launched ballistic missile (SLBM) developed by the Soviet Union starting around 1955. It was assigned the NATO reporting name SS-N-4 Sark and carried the GRAU index 4K50. History Development o ...

, a Soviet missile system *

R13 (Rodalies de Catalunya) Rodalies de Catalunya (, ; "Commuter Rail of Catalonia") is the main commuter and regional rail system in the Spanish autonomous community of Catalonia. It is administered by the Government of Catalonia and operated by the national rail operato ...

, a regional rail line in Catalonia, Spain *

Chlorotrifluoromethane Chlorotrifluoromethane, R-13, CFC-13, or Freon 13, is a non-flammable, non-corrosive chlorofluorocarbon (CFC) and also a mixed halomethane. It is a man-made substance used primarily as a refrigerant. When released into the environment, CFC-13 ha ...

, a refrigerant *

Nyaneka language Nyaneka or Haneca is a Bantu language of Angola , national_anthem = " Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year ...

* R13: Extremely flammable liquefied gas, a risk phrase * Rebellion R13, a prototype racing car *

ROT13 ROT13 ("rotate by 13 places", sometimes hyphenated ROT-13) is a simple letter substitution cipher that replaces a letter with the 13th letter after it in the alphabet. ROT13 is a special case of the Caesar cipher which was developed in ancient R ...

, a simple cipher * , a submarine of the United States Navy * R 13, a Buffet Crampon clarinet model {{Letter-NumberCombDisambig