E56 may refer to: European route E56 HMS E56 Nimzo-Indian Defence, Encyclopaedia of Chess Openings code Kōchi Expressway (between Kochi IC and Shimantocho-chuo IC), Nakamura-Sukumo Road and Matsuyama Expressway (between Matsuyama IC and Tsushimawa-Matsu IC), route E56 in Japan