PROBLEM TO BE SOLVED: To provide an adhesive composition capable of forming an adhesive layer which, while being a thin film, has performance including excellent reworkability and high adhesivity, and to provide an adhesive film using the adhesive composition.SOLUTION: The adhesive composition comprises: an acrylic polymer which is a copolymer having an acid value of 0.1 or less and a weight average molecular weight of 1,000,000 or more, and which comprises 100 parts by weight of a main component monomer (1) including at least one selected from the group consisting of C1-C14-alkyl (meth)acrylate monomers, where the alkyl group has a carbon number of 1 to 14, and (meth)acrylate monomers having aromatic groups, where butyl acrylate accounts for at least 30 parts by weight or more of (1), no carboxyl group-containing copolymerizable vinyl monomer, and 0.1 to 3.5 parts by weight of a hydroxyl group-containing copolymerizable vinyl monomer (2); and 0.01...
