An adhesive composition includes a (meth)acrylate copolymer that includes a repeating unit derived from a (meth)acrylate monomer including an alkyl group having 8 to 12 carbon atoms, a repeating unit derived from a (meth)acrylate monomer including an alkyl group having 20 to 30 carbon atoms, and a repeating unit derived from a hydroxyl group-containing (meth)acrylate monomer. An adhesive sheet and an image display device having improved high and low temperature folding properties are provided using the adhesive composition.