A refrigerator, comprising: a body having a storage compartment; a door rotatably coupled to the body so as to selectively open and close an access opening formed in a front side of the body; a hinge that rotatably couples the door to the body; a seal installed along a peripheral edge of one of the door or the body so as to be positioned between the body and the door when the door closes the access opening; a storage container configured to be coupled to the door in a first mode such that an interior of the body is accessible when the door is open, and to be coupled to the body in a second mode such that an interior of the storage container is accessible when the door is open, wherein a width of the storage container is less than a width of the access opening; at least one latch (520, 530) coupling the storage container to the door in the first mode; and a control mechanism provided for selection of the first mode or the second mode and controlling the latch (520, 530) based on the selection of the first mode or the second mode, characterized in that the at least one latch (520, 530) is provided on the storage container and couples the storage container to the body in the second mode; and the refrigerator further comprises: a holding guide recess formed on the storage compartment; a holding pin provided at the latch (520, 530), wherein the holding pin is coupled to the holding guide recess in the second mode such that the storage container is coupled to the body; at least one guide support device (510, 540) mounted at the storage container; fixing members provided at the door, wherein the fixing members are engaged with the at least one latch (520, 530) and the at least one guide support device (510, 540) in the first mode; a connection support device provided between the storage container and the door; and a fixing device provided at an interior of the door, at a position corresponding to the connection support device, such that the fixing device is engaged with the connection support device in the first mode. a body having a storage compartment; a door rotatably coupled to the body so as to selectively open and close an access opening formed in a front side of the body; a hinge that rotatably couples the door to the body; a seal installed along a peripheral edge of one of the door or the body so as to be positioned between the body and the door when the door closes the access opening; a storage container configured to be coupled to the door in a first mode such that an interior of the body is accessible when the door is open, and to be coupled to the body in a second mode such that an interior of the storage container is accessible when the door is open, wherein a width of the storage container is less than a width of the access opening; at least one latch (520, 530) coupling the storage container to the door in the first mode; and a control mechanism provided for selection of the first mode or the second mode and controlling the latch (520, 530) based on the selection of the first mode or the second mode, characterized in that the at least one latch (520, 530) is provided on the storage container and couples the storage container to the body in the second mode; and the refrigerator further comprises: a holding guide recess formed on the storage compartment; a holding pin provided at the latch (520, 530), wherein the holding pin is coupled to the holding guide recess in the second mode such that the storage container is coupled to the body; at least one guide support device (510, 540) mounted at the storage container; fixing members provided at the door, wherein the fixing members are engaged with the at least one latch (520, 530) and the at least one guide support device (510, 540) in the first mode; a connection support device provided between the storage container and the door; and a fixing device provided at an interior of the door, at a position corresponding to the connection support device, such that the fixing device is engaged with the connection support device in the first mode. a holding guide recess formed on the storage compartment; a holding pin provided at the latch (520, 530), wherein the holding pin is coupled to the holding guide recess in the second mode such that the storage container is coupled to the body; at least one guide support device (510, 540) mounted at the storage container; fixing members provided at the door, wherein the fixing members are engaged with the at least one latch (520, 530) and the at least one guide support device (510, 540) in the first mode; a connection support device provided between the storage container and the door; and a fixing device provided at an interior of the door, at a position corresponding to the connection support device, such that the fixing device is engaged with the connection support device in the first mode.