R56

R56 may refer to:

Roads

 * R56 expressway (Czech Republic), now the D56 motorway
 * R56 (South Africa)

Other uses

 * R-56 (rocket), a Soviet rocket design
 * HMS Tuscan (R56) a destroyer of the Royal Navy
 * Mini Hatch (R56), a car
 * R-56 Nordholz, a former airfield of the United States Army Air Corps in Germany
 * R56: Toxic to soil organisms, a risk phrase