Exhaust gas muffler for an exhaust system of an internal combustion engine, comprising: - a muffler housing with a circumferential wall elongated in the direction of a housing axis and with an end wall (20, 22) at each axial end area (16, 18) of the circumferential wall, - at least one exhaust gas pipe held in the area of an exhaust gas pipe holding opening (44, 46) at the circumferential wall and open towards a housing interior, wherein two exhaust gas pipe holding openings (44, 46) are provided in the circumferential wall in association with at least one exhaust gas pipe, wherein the exhaust gas pipe is fixed to the circumferential wall in the area of each exhaust gas pipe holding opening (44, 46), wherein the exhaust gas pipe is closed at one end area by means of a closing element, and wherein the at least one exhaust gas pipe has at least one exhaust gas passage opening in a length area extending between the two exhaust gas pipe holding openings (44, 46), and wherein the at least one exhaust gas pipe is fixed by connection in substance to the circumferential wall in the area of at least one exhaust gas pipe holding opening associated with this exhaust gas pipe, characterized in that - the closing element is inserted into the end area of the at least one exhaust gas pipe and is fixed thereto by connection in substance, - that one of the exhaust gas pipe holding openings (44, 46) associated with the at least one exhaust gas pipe has a smaller cross-sectional dimension than the other exhaust gas pipe holding opening (44, 46) associated with this exhaust gas pipe, and - that the exhaust gas pipe has a cross-section reduction between its areas fixed to the circumferential wall in the area of the exhaust gas pipe holding openings (44, 46). - a muffler housing with a circumferential wall elongated in the direction of a housing axis and with an end wall (20, 22) at each axial end area (16, 18) of the circumferential wall, - at least one exhaust gas pipe held in the area of an exhaust gas pipe holding opening (44, 46) at the circumferential wall and open towards a housing interior, wherein two exhaust gas pipe holding openings (44, 46) are provided in the circumferential wall in association with at least one exhaust gas pipe, wherein the exhaust gas pipe is fixed to the circumferential wall in the area of each exhaust gas pipe holding opening (44, 46), wherein the exhaust gas pipe is closed at one end area by means of a closing element, and wherein the at least one exhaust gas pipe has at least one exhaust gas passage opening in a length area extending between the two exhaust gas pipe holding openings (44, 46), and wherein the at least one exhaust gas pipe is fixed by connection in substance to the circumferential wall in the area of at least one exhaust gas pipe holding opening associated with this exhaust gas pipe, characterized in that - the closing element is inserted into the end area of the at least one exhaust gas pipe and is fixed thereto by connection in substance, - that one of the exhaust gas pipe holding openings (44, 46) associated with the at least one exhaust gas pipe has a smaller cross-sectional dimension than the other exhaust gas pipe holding opening (44, 46) associated with this exhaust gas pipe, and - that the exhaust gas pipe has a cross-section reduction between its areas fixed to the circumferential wall in the area of the exhaust gas pipe holding openings (44, 46).