To provide a grommet capable of being easily removed after locked in a through hole of a panel.

Theses is provided a grommet in which a grommet main body molded from rubber or elastomer includes: an outer diameter protrusion provided in one end of a small-diameter cylindrical portion for inserting a wire harness; a resin inner internal fitting portion having a U-shaped cross section annularly provided in the outer periphery portion of the outer diameter projection portion; a flange internally fitted and fixed to the resin inner internal fitting portion so as to be protruded from the outer periphery of a base end of a cylindrical portion of a resin inner; and a pair of pressing cover portions provided in the outer diameter protrusion so as to be protruded from an outer peripheral edge, and a locking claw is protruded from an outer peripheral surface of the cylindrical portion of the resin inner, and a locking release piece is protruded from an inner edge portion of a locking surface of the locking claw toward the flange, and a pressing portion is provided in the projection side of the locking release piece so as to be protruded in a reverse L-shape to the outer diameter direction, and the pressing portion is positioned in a portion formed by removing the flange and is positioned inside the pressing cover portion of the grommet main body, and pressing the outer periphery of the pressing cover portion allows the pressing portion to press the locking claw to the release direction.