Abstract: There is provided an adjustable device for supporting a lighting element of a lighting fixture, and which provides for adjusting the spatial configuration of the lighting fixture by adjusting, in particular, the position of a lamp-holder with respect to a supporting body; the lamp-holder is connected to the supporting body by an electric cable, and by a flexible conducting first rod secured at opposite ends to the lamp-holder and the supporting body; a flexible second rod is fixed to the lamp-holder and to the supporting body by respective attachments; and adjusting means are provided for adjusting the length of the second rod to selectively adjust the distance between the respective attachments and, therefore, the position of the lamp-holder with respect to the supporting body.