A problem of the present invention is to provide a curable composition which gives good curability by use of a catalyst other than organic tin catalysts. The above problem is solved by a curable composition, comprising: (A) one or more polymers having a silicon-containing group which is crosslinkable by forming siloxane bonds, (B) an amine compound, and (C) a silicon compound having, as substituents on its silicon, at least one electron withdrawing group, and at least one group selected from the group consisting of alkoxy groups, alkenyloxy groups, acyloxy groups, and a hydroxyl group.