The purpose of the present invention is to provide a multi-layered structure having high gas barrier performance and crack resistance as well as excellent fatigue resistance, and to provide an inner liner for a pneumatic tire using the multi-layered structure, as well as a pneumatic tire comprising the inner liner. The present invention is characterized in comprising: a barrier layer (2) made from a polymer material which, at 20 DEG C and 65% RH, has an elongation-at-break according to JIS K 7113 of at most 50%; and an elastomer layer (3) made from a polymer material which, at 20 DEG C and 65% RH, has an elongation-at-break according to JIS K 7113 of at least 100%; the amount of plastic deformation during 100% strain input being greater than the amount of deformation at the proof stress point.