R21, R-21 or R.21 may refer to:
Military
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R-21 (missile)
The R-21 (russian: Đ -21; NATO: SS-N-5 'Sark/Serb'; GRAU: 4K55) was a submarine-launched ballistic missile in service with the Soviet Union between 1963 and 1989. It was the first Soviet nuclear missile that could be launched from a submerged sub ...
, a Soviet submarine-launched ballistic missile
* , an aircraft carrier of the Royal Australian Navy
* , a destroyer of the Royal Navy
* , a submarine of the United States Navy
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Roads
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R-21 regional road (Montenegro)
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R21 (South Africa)
The R21 / P157 is a major north–south provincial route (with a freeway portion designated as a National Road) in eastern Gauteng Province, South Africa. Built in the early 1970s, it remains one of two freeways (the other being the N1) linking P ...
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R21 highway (Russia)
Science and medicine
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Dichlorofluoromethane
Dichlorofluoromethane or Freon 21 or R 21 is a halomethane or hydrochlorofluorocarbon with the formula CHCl2F. It is a colorless and odorless gas. It is produced by fluorination of chloroform using a catalyst such as antimony trifluoride:
:CHCl ...
, a refrigerant
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R21: Harmful in contact with skin, a risk phrase
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R21/Matrix-M a Malaria vaccine
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Small nucleolar RNA R21
Other uses
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R21 (New York City Subway car)
The R21 was a New York City Subway car built by St. Louis Car Company from 1956 to 1957 for the IRT A Division. A total of 250 cars were built, arranged as single units. Two versions were manufactured: Westinghouse (WH)-powered cars and General ...
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Kwanyama dialect
Kwanyama or Cuanhama is a national language of Angola and Namibia. It is a standardized dialect of the Ovambo language, and is mutually intelligible with Oshindonga, the other Ovambo dialect with a standard written form.
The entire Christian Bib ...
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Renault 21
The Renault 21 is a large family car produced by French automaker Renault between 1986 and 1994. It was also sold in North America initially through American Motors dealers as the Renault Medallion and later through Jeep-Eagle dealers as the Ea ...
, a French family car
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Tumansky R-21
The Tumansky R-21 was a Soviet turbojet engine of the 1960s. Used for development only, the project was canceled.
Design and development
The Tumansky R-21 was developed at Tushino motor plant (part of OKB-300), headed by Nikolai Georgievich M ...
, a Soviet turbojet engine
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