A container closure integrally formed from a synthetic resin includes a body, which has an upper surface wall, and an outer lid connected to the body so as to be pivotable between a closed position at which the upper surface wall of the body is covered and an open position at which the upper surface wall of the body is opened, wherein a raised portion having discharge ports formed on both sides is disposed on the upper surface wall of the body, the discharge ports formed on both sides of the raised portion are opened when the outer lid is pivoted to the open position, while the discharge ports formed on both sides of the raised portion are sealed fully reliably when the outer lid is pivoted to the closed position.