D68 may refer to:
D. 68, String Quartet No. 5 in B-flat major, composed by Franz Schubert in 1813 D-68, a Soviet 115mm tank gun. D68 enterovirus, a member of the family Picornaviridae , V-class destroyer of the Royal Navy (RN) and Royal Australian Navy (RAN) , later or 1943 Battle-class fleet destroyer of the Royal Navy , British large aircraft carrier design of World War II
See also 2014 enterovirus D68 outbreak