Improved telescopic clothes drying rack comprising a frame composed of two uprights, each one formed of a first tubular rod, a second tubular rod and a third tubular rod that slide mutually so that the upright can be alternatively disposed in a non-operating contracted position and in an operating extended position, - wherein each of said rods (1, 2, 3) comprises an upper end (1a, 2a, 3a) and a lower end (1b, 2b, 3b); - wherein the two first rods, the two second rods and the two third rods of said two uprights are connected by means of crossbars, in such a way as to form portal-like structures - wherein each of said uprights internally comprises a first device and a second device suitable for locking or unlocking the mutual sliding of said rods (1, 2, 3), of which the first locking/unlocking device operates between the lower end of the first rod and the upper end of the second rod, and the second device operates between said lower end of the second rod and said upper end of the third rod - wherein said first locking/unlocking device is engaged in the lower end of said first rod and said second locking/unlocking device is engaged in the lower end of said second rod, wherein said first and second locking/unlocking devices are provided with sliding pins with horizontal axis (461, 561) suitable for engaging into radial holes (F1, F2), respectively provided in the upper end of the second rod and in the upper end of the third rod clothes drying rack characterized in that said first and second locking/unlocking device are provided with release buttons (100, 200) respectively associated with vertically sliding tabs (102, 202); wherein, following to a downward sliding movement, said tabs (102, 202) are suitable for enabling the extraction of said pin from the hole and the extraction of said pin from the hole wherein said first rod is internally provided with an axially sliding stem, the upper end of which protrudes from said upper end of said first rod, acting as an actuation button wherein, after a downward sliding movement, said sliding stem is suitable for exerting a downward pressure with respect to said release button provided in said first locking/unlocking device, by means of which said tab of said button enables the extraction of the pin with horizontal axis from the hole; wherein said button of said first locking/unlocking device is provided with an additional means suitable for exerting a pressure on said release button of said locking/unlocking device during the descending travel of said button, in such a way that said tab provided in said button enables the extraction of said pin with horizontal axis of said second locking/unlocking device from the hole. - wherein each of said rods (1, 2, 3) comprises an upper end (1a, 2a, 3a) and a lower end (1b, 2b, 3b); - wherein the two first rods, the two second rods and the two third rods of said two uprights are connected by means of crossbars, in such a way as to form portal-like structures - wherein each of said uprights internally comprises a first device and a second device suitable for locking or unlocking the mutual sliding of said rods (1, 2, 3), of which the first locking/unlocking device operates between the lower end of the first rod and the upper end of the second rod, and the second device operates between said lower end of the second rod and said upper end of the third rod - wherein said first locking/unlocking device is engaged in the lower end of said first rod and said second locking/unlocking device is engaged in the lower end of said second rod, wherein said first and second locking/unlocking devices are provided with sliding pins with horizontal axis (461, 561) suitable for engaging into radial holes (F1, F2), respectively provided in the upper end of the second rod and in the upper end of the third rod clothes drying rack characterized in that