A11

A11, A 11 or A-11 may refer to:

==Military== Aero A.11, a Czechoslovak bomber produced before World War II Consolidated A-11, an attack version of the Consolidated P-30 fighter plane of the 1930s HMS A11, an A-class submarine of the Royal Navy Matilda Mk I, a British Army infantry tank Aggregate 11, a proposed military rocket of Nazi Germany A-11 Ghibli, the Italian designation for the AMX International AMX