To provide: a pressure-sensitive adhesive composition that includes an oxyalkylene polymer having at least one silicon-containing group which has a hydroxyl or hydrolyzable group bonded to the silicon atom and can be crosslinked through the formation of a siloxane bond; a tackifier resin; and a curing catalyst, wherein the pressure-sensitive adhesive composition has less coloring and good releasability, good curability and good adhesive characteristics.

The pressure-sensitive adhesive composition includes, as essential components: (A) an oxyalkylene polymer having at least one silicon-containing group which has a hydroxyl or hydrolyzable group bonded to the silicon atom and can be crosslinked through the formation of a siloxane bond; (B) a tackifier resin other than a phenolic compound; and (C) a titanium compound.