An upright for banisters, railings and the like, comprising a tubular body (6), a base (10) associated with the lower end (7) of said tubular body (6) and suitable for being fixed to a floor (3), a step (5) of a staircase or another similar surface, and a top piece (11) associated with the upper end (8) of said tubular body (6) and suitable for being fixed to the handrail (12) of a banister (2), railing (4) or similar. The upright comprises adjustable connection means (13) of said base (10) to said top piece (11) foreseen inside said tubular body (6).