To provide an adhesive composition excellent in bonding property between a transparent electroconductive film and a glass plate, etc., even under high temperature and high humidity conditions, without forming bubbles or peeling between the adhesive layer and a glass substrate plate, also capable of inhibiting the corrosion of the transparent electroconductive film and excellent in durability, transparency and bonding reliability, and an adhesive sheet and an optical member by using the same.

This adhesive composition having 500,000 to 1,500,000 weight-average molecular weight is provided by comprising an acrylic polymer (A) obtained by polymerizing 9.5 to 87.95 wt.% alkyl acrylate monomer having 4C-12C alkyl, 10 to 40 wt.% alkyl (meth)acrylate monomer having 1C-2C alkyl, 2 to 50 wt.% hydroxy group-containing monomer and 0.05 to 0.5 wt.% carboxy group-containing monomer and (B) a metal chelate compound having an equivalent amount of the carboxy group-containing monomer.