There is provided an adhesive composition having both high adhesion force and stable adhesion performance. An adhesive composition comprising, per 100 parts by mass of a curable resin (A), 1 part by mass or more and 80 parts by mass or less of substantially spherical organic particles (B), wherein the adhesive composition is used in an application amount of 5 mg/cm 2 or more and 500 mg/cm 2 or less on an adherend.