R31
# R31

R31 or R-31 may refer to:

## Automobiles

* Nissan Pintara (R31), a compact car sold in Australia
* Nissan Skyline (R31), a mid-size car
* Renault R31, a Formula One racing car

## Aviation

* R31 (airship), of the Royal Navy
* Renard R.31, a Belgian reconnaissance aircraft
* Rubik R-31 Dupla, a Hungarian training glider

## Other uses

* R-31 (missile), a Soviet submarine-launched ballistic missile
* R31 (South Africa), a road
* Chlorofluoromethane, a refrigerant
* Grendel R31, an American semi-automatic carbine
* Herero language
* HMS Warrior (R31), an aircraft carrier of the Royal Navy
* R31: Contact with acids liberates toxic gas, a risk phrase
