A refrigerator comprising a body provided with a storage compartment, wherein: the body includes an inner case configured to form the storage compartment; and the inner case includes: a front frame configured to form a front of the inner case, a plurality of side panels formed in a plate shape and having front ends coupled to the front frame, and a rear panel coupled to rear ends of the plurality of side panels, wherein the front frame includes a coupling portion terminating in a locking protrusion (121d-1); and the front end of each of the plurality of side panels includes a locking portion arranged in the form of a hook, characterized in that the end of the hook extends towards the locking protrusion (121d-1) and engages with the locking protrusion (121-d) to couple the front frame to the front end of each of the plurality of side panels, wherein each of the plurality of side panels includes an elastic portion formed by a part of a rear end of a side panel being bent into an approximate U-shape; and the rear panel includes a rear coupling portion formed in a groove shape, so that the elastic portion is inserted into and supported by an inner surface of the rear coupling portion. the body includes an inner case configured to form the storage compartment; and the inner case includes: a front frame configured to form a front of the inner case, a plurality of side panels formed in a plate shape and having front ends coupled to the front frame, and a rear panel coupled to rear ends of the plurality of side panels, wherein the front frame includes a coupling portion terminating in a locking protrusion (121d-1); and the front end of each of the plurality of side panels includes a locking portion arranged in the form of a hook, characterized in that the end of the hook extends towards the locking protrusion (121d-1) and engages with the locking protrusion (121-d) to couple the front frame to the front end of each of the plurality of side panels, wherein each of the plurality of side panels includes an elastic portion formed by a part of a rear end of a side panel being bent into an approximate U-shape; and the rear panel includes a rear coupling portion formed in a groove shape, so that the elastic portion is inserted into and supported by an inner surface of the rear coupling portion. a front frame configured to form a front of the inner case, a plurality of side panels formed in a plate shape and having front ends coupled to the front frame, and a rear panel coupled to rear ends of the plurality of side panels, wherein the front frame includes a coupling portion terminating in a locking protrusion (121d-1); and the front end of each of the plurality of side panels includes a locking portion arranged in the form of a hook, characterized in that the end of the hook extends towards the locking protrusion (121d-1) and engages with the locking protrusion (121-d) to couple the front frame to the front end of each of the plurality of side panels, wherein each of the plurality of side panels includes an elastic portion formed by a part of a rear end of a side panel being bent into an approximate U-shape; and the rear panel includes a rear coupling portion formed in a groove shape, so that the elastic portion is inserted into and supported by an inner surface of the rear coupling portion.