A refrigerator comprising: a cabinet having a storage space defined therein; a door pivotally connected to a front face of the cabinet for selectively opening and closing the storage space; a shelf assembly including a shelf support arm fixed to an inner side of the cabinet, and a shelf slidably connected to the shelf support arm, and a withdrawing mechanism configured for allowing the shelf to be withdrawn forward when the door is pivoted to open the storage space, wherein the withdrawing mechanism includes: a sliding member installed on a side face of the cabinet so as to move in the anteroposterior direction; a link member having a front-end portion connected to the door and a rear-end portion thereof connected to the sliding member, wherein the link member is configured for allowing the sliding member to move forward or rearward together with the pivoting movement of the door, and characterized by a connector for selectively connecting the sliding member to the shelf, wherein the connector includes: a connecting unit selectively inserted into a receiving groove formed in the sliding member, wherein the connecting unit has a first inclined face formed on one side thereof; and an actuating unit having a second inclined face formed on one end thereof, wherein the second inclined face contacts the first inclined face, wherein when the actuating unit moves toward a rear face of the cabinet, the second inclined face moves along the first inclined face such that the connecting unit moves to be separated from the receiving groove. a cabinet having a storage space defined therein; a door pivotally connected to a front face of the cabinet for selectively opening and closing the storage space; a shelf assembly including a shelf support arm fixed to an inner side of the cabinet, and a shelf slidably connected to the shelf support arm, and a withdrawing mechanism configured for allowing the shelf to be withdrawn forward when the door is pivoted to open the storage space, wherein the withdrawing mechanism includes: a sliding member installed on a side face of the cabinet so as to move in the anteroposterior direction; a link member having a front-end portion connected to the door and a rear-end portion thereof connected to the sliding member, wherein the link member is configured for allowing the sliding member to move forward or rearward together with the pivoting movement of the door, and characterized by a connector for selectively connecting the sliding member to the shelf, wherein the connector includes: a connecting unit selectively inserted into a receiving groove formed in the sliding member, wherein the connecting unit has a first inclined face formed on one side thereof; and an actuating unit having a second inclined face formed on one end thereof, wherein the second inclined face contacts the first inclined face, wherein when the actuating unit moves toward a rear face of the cabinet, the second inclined face moves along the first inclined face such that the connecting unit moves to be separated from the receiving groove. a sliding member installed on a side face of the cabinet so as to move in the anteroposterior direction; a link member having a front-end portion connected to the door and a rear-end portion thereof connected to the sliding member, wherein the link member is configured for allowing the sliding member to move forward or rearward together with the pivoting movement of the door, and characterized by a connector for selectively connecting the sliding member to the shelf, wherein the connector includes: a connecting unit selectively inserted into a receiving groove formed in the sliding member, wherein the connecting unit has a first inclined face formed on one side thereof; and an actuating unit having a second inclined face formed on one end thereof, wherein the second inclined face contacts the first inclined face, wherein when the actuating unit moves toward a rear face of the cabinet, the second inclined face moves along the first inclined face such that the connecting unit moves to be separated from the receiving groove. a connecting unit selectively inserted into a receiving groove formed in the sliding member, wherein the connecting unit has a first inclined face formed on one side thereof; and an actuating unit having a second inclined face formed on one end thereof, wherein the second inclined face contacts the first inclined face, wherein when the actuating unit moves toward a rear face of the cabinet, the second inclined face moves along the first inclined face such that the connecting unit moves to be separated from the receiving groove.