R23 or R-23 may refer to:
Military
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R-23 (missile), a Soviet air-to-air missile
* , a destroyer of the Royal Navy
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Rikhter R-23
The Rikhter R-23 is an aircraft autocannon developed for the Soviet Air Force starting in the late 1950s. It was designed to be as short as possible to avoid problems found on high-speed aircraft when the guns were pointed into the airstream. The ...
, a Soviet aircraft autocannon
* , a submarine of the United States Navy
Roads
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R23 road (Belgium)
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R-23 regional road (Montenegro)
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R23 highway (Russia)
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R23 (South Africa)
Other uses
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R23: Toxic by inhalation, a risk phrase
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Fluoroform
Trifluoromethane or fluoroform is the chemical compound with the formula CHF3. It is one of the " haloforms", a class of compounds with the formula CHX3 (X = halogen) with C3v symmetry. Fluoroform is used in diverse applications in organic s ...
, a refrigerant
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Kwambi dialect
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Renault R23, a Formule One racing car
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Rubik R-23 Gébics, a Hungarian training glider
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