A refrigerator including an inner door rotatably coupleable to a cabinet to open and close a storage compartment, the inner door having an opening, an outer door rotatably coupleable to the front of the inner door to open and close the opening of the inner door, a hook locking groove formed on the inner door, a manipulation handle provided to be rotatable with respect to a transverse shaft coupleable to the outer door and including a movable contact part, and a locking member provided to be rotatable with respect to a longitudinal shaft coupled to the outer door, wherein the locking member includes a hook lockable to and unlockable from the hook locking groove, and a passive contact part to selectively contact with the movable contact part.