An easily openable container lid for a container having a mouth-neck section having an annular locking projection formed in an upper end part of an outer peripheral surface of the mouth-neck section, the locking projection protruding radially outwardly, the container lid comprising: a shell made of a thin metal plate which has a circular top panel wall, a skirt wall hanging down from a peripheral edge of the top panel wall, and a connecting piece extending out from a lower end of the skirt wall in a predetermined region in a circumferential direction, and which is formed with a pair of scores (18a, 18b) extending upwardly from the lower end of the skirt wall on both sides of the predetermined region and then extending in the top panel wall; and a grip piece formed from a synthetic resin which is connected to the connecting piece, the grip piece having a connecting section surrounding the connecting piece at least partially, and a grip section extending out from the connecting section, wherein the grip piece includes an extension section extending out upwardly from an upper end of an inner surface of the connecting section along an inner peripheral surface of the skirt wall; characterized in that an upper end part of the extension section of the grip piece is configured to be located above the lower end of the locking projection and opposite an outer peripheral surface of the locking projection of the mouth-neck section when the container lid is fitted onto the mouth-neck section; and the upper end part of the extension section of the grip piece is configured to be sandwiched between the inner peripheral surface of the skirt wall and the outer peripheral surface of the locking projection when a lower end part of the skirt wall is deformed radially inwardly. a shell made of a thin metal plate which has a circular top panel wall, a skirt wall hanging down from a peripheral edge of the top panel wall, and a connecting piece extending out from a lower end of the skirt wall in a predetermined region in a circumferential direction, and which is formed with a pair of scores (18a, 18b) extending upwardly from the lower end of the skirt wall on both sides of the predetermined region and then extending in the top panel wall; and a grip piece formed from a synthetic resin which is connected to the connecting piece, the grip piece having a connecting section surrounding the connecting piece at least partially, and a grip section extending out from the connecting section, wherein the grip piece includes an extension section extending out upwardly from an upper end of an inner surface of the connecting section along an inner peripheral surface of the skirt wall; characterized in that an upper end part of the extension section of the grip piece is configured to be located above the lower end of the locking projection and opposite an outer peripheral surface of the locking projection of the mouth-neck section when the container lid is fitted onto the mouth-neck section; and the upper end part of the extension section of the grip piece is configured to be sandwiched between the inner peripheral surface of the skirt wall and the outer peripheral surface of the locking projection when a lower end part of the skirt wall is deformed radially inwardly.