R26 or R-26 may refer to:
Roads R-26 regional road (Montenegro) R26 (South Africa)
Formula One cars Audi R26, a 2026 Formula One race car Renault R26, a 2006 Formula One race car
Other uses R-26 (missile), a Soviet intercontinental ballistic missile R26 (New York City Subway car) R-26 (salon), an artistic salon in Paris British Airship R.26, a training airship , a destroyer of the Royal Navy R26: Very toxic by inhalation, a risk phrase Rubik R-26 Góbé, a Hungarian training glider , a submarine of the United States Navy