Disclosed is a moisture-curable adhesive composition which is applicable to production of automobile interior parts. This moisture-curable adhesive composition has excellent adhesion to polyolefins such as polypropylene and polyethylene, while having excellent heat resistance. Specifically disclosed is an adhesive composition containing a styrene block copolymer (A) containing at least one unsaturated bond, a hydrogenated styrene block copolymer (B) having a styrene content of not less than 15% by weight, a silane compound (C) having an unsaturated bond, an acid-modified polyolefin resin (D) and a polymerization initiator (E).