To provide an adhesive composition which has high bonding strength and ensures excellent transparency of a bonded place, in adhesion of a polyolefin resin molded body or in adhesion of a norbornene resin molded body.

The adhesive composition comprises a thermoplastic flexible acrylic resin (A) having Shore A hardness of 90 and an aromatic tackifier (B), wherein the thermoplastic flexible acrylic resin (A) is preferably a block copolymer consisting of monomers including methyl methacrylate and butyl acrylate, and the aromatic tackifier (B) is preferably a resin obtained by copolymerizing styrene, substituted styrene and/or phenol.