Pneumatic tire

The present invention provides a rubber composition having favorable adhesion, in which air permeability is significantly decreased, and a lightweight pneumatic tire comprising the rubber composition. Specifically, the present invention provides a pneumatic tire having an inner liner comprising a rubber composition containing 20 to 100 parts by weight of an inorganic filler, based on 100 parts of a rubber component containing 65 to 94 % by weight of at least one rubber selected from the group consisting of butyl rubber, halogenated butyl rubber and rubber obtained by halogenating a copolymer of isomonoolefin having 4 to 7 carbon atoms and p-alkylstyrene; and 6 to 35 % by weight of epoxidized natural rubber having an epoxidization ratio of 5 to 85 % by mol.