Fastening device for a flexible tubular lighting device having a first end and a second end; wherein the fastening device is designed for fastening the tubular lighting device at least respectively at the first and the second end and the fastening device has a first end fastener (6; 6') for fastening the tubular lighting device at the first end and a second end fastener (36; 36a; 36b; 36c; 36d) for fastening the tubular lighting device at the second end; wherein the fastening device is designed in such a way that the tubular lighting device can be supplied with electricity at the first end for its operation; wherein the fastening device is designed in such a way that the tubular lighting device can be arranged and fastened in a selectable one of possible, in particular three-dimensional, shapes thereof in the room; wherein the first end fastener (6; 6') has a mounting part (10; 10'), which can be fastened to the tubular lighting device at the first end; wherein the mounting part (10; 10') of the first end fastener (6; 6') has a through opening (9, 13; 9'), wherein the first end of the tubular lighting device can be received at least in sections at least in one region of the through opening (9, 13; 9'); characterised in that the mounting part (10; 10') can further be fixed in a clamped manner to a panel-shaped element formed as a panel component of a ceiling or a wall or another construction and in that the mounting part (10; 10') has at least one clamping element (21; 21'), which can be moved by means of a screw mechanism in order to effect the clamping attachment, wherein the clamping element (21; 21') is designed in the form of an arm or wing and engages with a screw element (28; 28') which can be operated by an operator and the mounting part (10; 10') is provided with a stop or stops (31; 31a', 31b') for the clamping element (21; 21'), wherein the stop or stops (31; 31a', 31b') limit(s) a pivot range of the clamping element (21; 21') when same is rotated together with the screw element (28; 28') and the clamping element (21; 21') can be moved (22; 22') along the axis (28a; 28a') of the screw element (28; 28') when it is in contact with the stop or one of the stops (31; 31a', 31b') and the screw element (28; 28') rotates at the same time. wherein the fastening device is designed for fastening the tubular lighting device at least respectively at the first and the second end and the fastening device has a first end fastener (6; 6') for fastening the tubular lighting device at the first end and a second end fastener (36; 36a; 36b; 36c; 36d) for fastening the tubular lighting device at the second end; wherein the fastening device is designed in such a way that the tubular lighting device can be supplied with electricity at the first end for its operation; wherein the fastening device is designed in such a way that the tubular lighting device can be arranged and fastened in a selectable one of possible, in particular three-dimensional, shapes thereof in the room; wherein the first end fastener (6; 6') has a mounting part (10; 10'), which can be fastened to the tubular lighting device at the first end; wherein the mounting part (10; 10') of the first end fastener (6; 6') has a through opening (9, 13; 9'), wherein the first end of the tubular lighting device can be received at least in sections at least in one region of the through opening (9, 13; 9'); characterised in that the mounting part (10; 10') can further be fixed in a clamped manner to a panel-shaped element formed as a panel component of a ceiling or a wall or another construction and in that the mounting part (10; 10') has at least one clamping element (21; 21'), which can be moved by means of a screw mechanism in order to effect the clamping attachment, wherein the clamping element (21; 21') is designed in the form of an arm or wing and engages with a screw element (28; 28') which can be operated by an operator and the mounting part (10; 10') is provided with a stop or stops (31; 31a', 31b') for the clamping element (21; 21'), wherein the stop or stops (31; 31a', 31b') limit(s) a pivot range of the clamping element (21; 21') when same is rotated together with the screw element (28; 28') and the clamping element (21; 21') can be moved (22; 22') along the axis (28a; 28a') of the screw element (28; 28') when it is in contact with the stop or one of the stops (31; 31a', 31b') and the screw element (28; 28') rotates at the same time.